/*! 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} Q4 Find the value of the variable.7... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q4 (page 10)

Find the value of the variable.

7-z=13

Short Answer

Expert verified

The value of the variable is z=-5.

Step by step solution

01

Step 1. Subtract 7.

To find the value of variable in the equation 7-z=13, subtract 7 from both sides of the equation.

7鈭�z鈭�7=13鈭�7

02

Step 2. Collect like terms.

Remove all the brackets and collect the like terms.

7鈭�7鈭�z=13鈭�7

03

Step 3. Simplify the equation.

To further simplify, combine the like terms.

7鈭�7鈭�z=13鈭�70鈭�z=5鈭�z=5

04

Step 4. Multiply by -1.

In order to obtain z, multiply the equation -z=5from both sides with -1.

鈭�z脳鈭�1=5脳鈭�1z=鈭�5

05

Step 5. Verify the value.

In order to verify the value of z, substitute -5 for z into the equation 7-z=13.

7鈭�鈭�5=137+5=1313=13True

Hence, the value of the variable is z=-5.

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

For the following figure, find the coordinate of p and R.

In the following diagram HL and role="math" localid="1637753977355" KT鈫� intersect at the midpoint of HL. Classify the following statement as true or false.

KM must equal toMT.

Sketch and label the figures described. Use dashes for hidden parts.

Horizontal plane P contains two lines k and n that intersect at point A.

Suppose Pat spoke a line l joining F and T while you thought of a line n joining F and T. Is it better to say that l and n are two different lines, or to say that we have one line with two different names?

Name two planes that intersect in FG鈫�.
See all solutions

Recommended explanations on Math Textbooks

Calculus

Read Explanation

Discrete Mathematics

Read Explanation

Geometry

Read Explanation

Statistics

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Logic and Functions

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.