Chapter 7: Problem 9
Solve each equation: $$ \frac{x}{6}=3 $$
Short Answer
Expert verified
The solution is \( x = 18 \).
Step by step solution
01
Understand the Equation
The given equation is \( \frac{x}{6} = 3 \). This equation states that when the variable \( x \) is divided by 6, the result is 3. Our goal is to find the value of \( x \).
02
Eliminate the Fraction
To solve for \( x \), we need to eliminate the fraction. We do this by multiplying both sides of the equation by 6. This will cancel out the 6 in the denominator on the left side. The equation becomes \( 6 \times \frac{x}{6} = 6 \times 3 \).
03
Simplify the Equation
On simplifying, \( 6 \times \frac{x}{6} \) becomes \( x \), because the 6 in the numerator and the denominator cancel each other out. On the right side, \( 6 \times 3 = 18 \). Therefore, the equation simplifies to \( x = 18 \).
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Step-by-step solution
When faced with a linear equation, solving it step-by-step helps in breaking down the problem into more manageable parts. This method gives clarity and ensures you reach the solution accurately.
First, **understand the given equation** thoroughly. For example, in the equation \( \frac{x}{6} = 3 \), identifying that \( x \) is divided by 6 to get 3 is crucial.
Next, move to the process of solving. Start by eliminating unnecessary complications, like fractions, and work towards isolating the variable, which in this case is \( x \).
Finally, verify your solution by substituting back into the original equation. This ensures no errors were made during calculations. Taking it one step at a time helps in cementing your understanding of linear equations.
First, **understand the given equation** thoroughly. For example, in the equation \( \frac{x}{6} = 3 \), identifying that \( x \) is divided by 6 to get 3 is crucial.
Next, move to the process of solving. Start by eliminating unnecessary complications, like fractions, and work towards isolating the variable, which in this case is \( x \).
Finally, verify your solution by substituting back into the original equation. This ensures no errors were made during calculations. Taking it one step at a time helps in cementing your understanding of linear equations.
Algebra
Algebra is a fundamental part of mathematics that deals with expressing relationships through variables and symbols. It's like a language for math. It allows you to find unknown values by manipulating equations.
In this exercise, the equation \( \frac{x}{6} = 3 \) is a simple algebraic expression. The goal is to solve for the unknown variable \( x \).
In this exercise, the equation \( \frac{x}{6} = 3 \) is a simple algebraic expression. The goal is to solve for the unknown variable \( x \).
- **Variables**: These are symbols like \( x \) that stand in place of unknown numbers.
- **Operations**: You'll use operations such as addition, subtraction, multiplication, or division in algebra to simplify and solve equations.
- **Equations**: The equation you're solving equates the two sides, showing a balance, and your job is to find what value makes that balance true.
Fraction elimination
Fractions can make equations seem more complex, but eliminating them is a powerful strategy to simplify the problem.
To deal with fractions, find ways to make them disappear without changing the equality. In the context of the equation \( \frac{x}{6} = 3 \):
To deal with fractions, find ways to make them disappear without changing the equality. In the context of the equation \( \frac{x}{6} = 3 \):
- **Multiply through by the denominator**: This is the amount under the variable's division, in this case, 6. By multiplying both sides by 6, you cancel the fraction's division effect on \( x \).
- **Simplify the new equation**: After multiplying, the left side becomes simple \( x \), and the right side calculates to \( 18 \).
This results in a much easier equation, \( x = 18 \). It's the cornerstone of solving the problem without lingering fraction distractions, making your math journey straightforward.