/*! 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} Q13. Tell whether the given value of ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 2: Q13. (page 87)

Tell whether the given value of the variable is a solution of the equation.

21-z=-鈥�鈥�4;鈥�鈥�z=25

Short Answer

Expert verified

Yes, z=25is the solution of the equation 21-z=-鈥�鈥�4;

Step by step solution

01

Apply the concept of equation: 

An equation is a mathematical statement that two expressions are equal. The solution of an equation is the value that when substituted for the variable makes the equation a true statement.

Example: 3x + 5 = 14 is an equation, in which 3x+5 and 14 are two expressions separated by an 鈥樷�檈qual鈥欌�� sign.

02

What are the steps to solve an equation? 

Step 1: Simplify each side of the equation by removing parenthesis and combining the like terms.

Step 2: Use addition or subtraction to isolate the variable term on one side (preferably in the left side).

Step 3: Use Multiplication or Division to solve for the variable.

03

Step 3: Tell whether the given value of the variable is a solution of the equation.21-z=-  4;  z=25

Solving the equation:

21鈭�z=鈭�421鈭�25=鈭�4鈭�4=鈭�4

Yes, the solution of the equation is z=25

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

What is the coefficient of y in the expression8鈭�3y+1

Solve the equation. Check your solution.

y+9=0

Perform the indicated operation.

-鈥�鈥�75鈥�鈥�梅鈥�鈥�-鈥�鈥�5

Error Analysis Describe and correct the error in solvingx+8=10.

Perform the indicated operation.

7.8+-9.3
See all solutions

Recommended explanations on Math Textbooks

Calculus

Read Explanation

Mechanics Maths

Read Explanation

Logic and Functions

Read Explanation

Decision Maths

Read Explanation

Statistics

Read Explanation

Probability and Statistics

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.