/*! 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} Q5. How is solving 3x-7=-5different ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Q5. (page 120)

How is solving 3x-7=-5different from solving3x+7=-5?

Short Answer

Expert verified

Solving equation 3x-7=-5 requires addition of 7 to both sides of the equation first and solving 3x+7=-5 requires subtraction of 7 from both sides of the equation first.

Step by step solution

01

– Solve the first equation

Solve the equation 3x-7=-5.

3x鈭�7=鈭�53x=鈭�5+73x=2x=23

The solution of the equation isx=23.

02

– Solve the second equation 

Write the second equation and solve it.

3x+7=鈭�53x=鈭�5鈭�73x=鈭�12x=鈭�123x=鈭�4

Therefore, the solution of the equation is x=-4.

03

 Step 3 – Observation from equations 

To solve the 3x-7=-5, one needs to add 7 to both sides of the equation first and for solving 3x+7=-5, one needs to subtract 7 from both sides of the equation.

Thus, solving equation 3x-7=-5requires addition of 7 to both sides of the equation first and solving 3x+7=-5requires subtraction of 7 from both sides of the equation first.

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 91影视!

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

Solve the equation. Check your solution.21=4x-9-x

Solve the equation. Check your solution.2m+0.5(m-4)=9

Solve the equation. Check your solution.2(s-1)=6

Geometry The perimeter of the square is equal to the perimeter of the triangle. The sides of the triangle are equal in length.

  1. Estimate Without doing any calculations, estimate which figure has the greater side length. Explain your choice.
  2. What is the side length and perimeter of each figure?

Describe and correct the error in solving the equation

4x + 7 = x 鈥� 2
See all solutions

Recommended explanations on Math Textbooks

Mechanics Maths

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Decision Maths

Read Explanation

Statistics

Read Explanation

Geometry

Read Explanation

Discrete Mathematics

Read Explanation
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.