/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 7 Solve each equation. See Example... [FREE SOLUTION] | 91Ó°ÊÓ

91Ó°ÊÓ

Solve each equation. See Examples 1 and \(2 .\) $$ 5(2 x-1)-2(3 x)=1 $$

Short Answer

Expert verified
The solution is \(x = \frac{3}{2}\).

Step by step solution

01

Distribute in the Parentheses

First, we need to distribute the numbers outside the parentheses in the equation. This means you will multiply 5 by both terms inside of the first set of parentheses \((2x-1)\) and -2 by both terms inside the second set of parentheses \((3x)\). This gives us \(5 \cdot 2x - 5 \cdot 1 - 2 \cdot 3x\). Simplifying, we obtain \(10x - 5 - 6x\).
02

Combine Like Terms

Next, combine the like terms on the left-hand side of the equation. The like terms here are \(10x\) and \(-6x\). Adding these terms together results in \(4x - 5\). So the equation becomes \(4x - 5 = 1\).
03

Isolate the Variable Term

Add 5 to both sides of the equation to isolate the term with the variable \(x\). So, \(4x - 5 + 5 = 1 + 5\). This simplifies to \(4x = 6\).
04

Solve for the Variable

Finally, divide both sides of the equation by 4 to solve for \(x\). This gives \(\frac{4x}{4} = \frac{6}{4}\), which simplifies to \(x = \frac{3}{2}\).

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91Ó°ÊÓ!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Distributive Property in Algebra
The distributive property is a fundamental aspect of algebra that helps simplify expressions and solve equations. It's used to eliminate parentheses by multiplying each term inside the parentheses by the factor outside. In the equation provided, you need to apply the distributive property twice. First, distribute the 5 across the terms inside the parentheses \(2x - 1\), producing \(5 \cdot 2x - 5 \cdot 1\). Next, distribute \(-2\) across the terms inside its parentheses, namely \(3x\), resulting in \(-2 \cdot 3x\). This action simplifies the expression from \[5(2x - 1) - 2(3x)\] to \[10x - 5 - 6x\].
This process makes equations easier to manage, reducing complexity and making the next steps, like combining terms, more straightforward.
Combining Like Terms
Combining like terms is crucial for simplifying algebraic expressions. Terms are considered 'like' if they have exactly the same variables raised to the same powers. In our example, we have two terms with the variable \(x\): \(10x\) and \(-6x\).
To combine these, just add their coefficients: \((10 - 6)x\), simplifying our equation from \[10x - 5 - 6x\] to \[4x - 5\].
This simplification condenses the equation and prepares it for solving, allowing you to deal with fewer terms and making the equation more manageable in subsequent steps.
Solving Linear Equations
Solving linear equations involves finding the value of the variable that makes the equation true. After combining like terms, our equation becomes \[4x - 5 = 1\]. The goal is to solve for the variable \(x\). This step involves moving towards isolating the variable, which is integral in linear equations.
The equation here tells you that the term \(4x\), after adjustment, should equal a constant. Solving this involves reversing operations through addition or subtraction to simplify further. As you simplify, closely follow the equation’s rule to maintain balance on both sides.
Isolating Variables in Equations
Isolating the variable is the process that ultimately leads to solving the equation. Once you have your terms combined and simplified, as in the equation \[4x - 5 = 1\], you aim to 'isolate' \(x\). This means getting \(x\) by itself on one side of the equation.
In our example, start by adding 5 to both sides to cancel out the \(-5\) next to \(4x\), leading to \[4x = 6\]. The final step is dividing both sides by 4, thus \( rac{4x}{4} = rac{6}{4}\), which simplifies to \( rac{3}{2}\).
Each operation you perform has an opposite that allows you to peel back layers until you isolate the desired term, ensuring the equation represents a solution.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The Mars Odyssey spacecraft was launched in 2001 , beginning a multiyear mission to observe and map the planet Mars. Mars Odyssey was launched on Boeing's Delta II 7925 launch vehicle using nine strap-on solid rocket motors. Each solid rocket motor has a height that is 8 meters more than 5 times its diameter. If the sum of the height and the diameter for a single solid rocket motor is 14 meters, find each dimension. (Recently, NASA approved a continuation of the Odyssey mission through September 2010.) (Source: NASA)

Solve the following. For Exercises 61 and \(62,\) the solutions have been started for you. The perimeter of a rectangle is to be no greater than 100 centimeters and the width must be 15 centimeters. Find the maximum length of the rectangle.

Maria Lipco has scores of \(85,95,\) and 92 on her algebra tests. Use an inequality to find the scores she can make on her final exam to receive an A in the course. The final exam counts as three tests, and an \(\mathrm{A}\) is received if the final course average is greater than or equal to 90 . Round to one decimal place.

Currently, the two fastest trains are the Japanese Maglev and the French TGV. The sum of their fastest speeds is 718.2 miles per hour. If the speed of the Maglev is 3.8 mph faster than the speed of the TGV, find the speeds of each.

On an NBA team the two forwards measure \(6^{\prime} 8^{\prime \prime}\) and \(6^{\prime} 6^{\prime \prime}\) tall and the two guards measure \(6^{\prime} 0^{\prime \prime}\) and \(5^{\prime} 9^{\prime \prime}\) tall. How tall should the center be if they wish to have a starting team average height of at least \(6^{\prime} 5^{\prime \prime} ?\)

See all solutions

Recommended explanations on Math Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.