/*! 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} Q42. Simplify each expression.4z+1-6z... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 3: Q42. (page 144)

Simplify each expression.

4z+1-6z-7

Short Answer

Expert verified

The value of the expression is 8-2z.

Step by step solution

01

Step-1 –Apply the concept of addition and subtraction of variable

Whether we add or subtract variables, we follow the same rule, even though they have different operation, when adding or subtracting term that have exactly the same variable. We either add or subtract the co-efficient and let the result stand with variable.

02

Step-2 –Example of addition and subtraction of variable

2a+5a+4a=11a,In this equation we can add all the co-efficientlocalid="1648723969181" 2,5and localid="1648723976416" 4because the variables are same (a).

localid="1648723997851" 11a-5a-4a=2a,In this equation we can subtract all the co-efficientlocalid="1648724009446" 11,5andlocalid="1648724024658" 4because the variables are same (a).

03

Step-2 –Evaluate the expression

To evaluate the expression we applying the concept of addition and subtraction of variables.

(4z+1)鈭�(6z鈭�7)=4z+1鈭�6z+7=8鈭�2z.

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

1.2x-0.91=0.8x+2.29

Solve each system of equations by graphing.

16.2x+3y=122x鈭�y=4

Solve each system of equations.

x+y+z=鈭�12x+4y+z=1x+2y鈭�3z=鈭�3

Graph each system of equations and describe it as consistent and independent, consistent and dependent, or inconsistent.

y=x+4y=x鈭�4

Graph each system of equations and describe it as consistent and independent, consistent and dependent, or inconsistent.

27.x+y=4鈭�4x+y=9
See all solutions

Recommended explanations on Math Textbooks

Decision Maths

Read Explanation

Pure Maths

Read Explanation

Discrete Mathematics

Read Explanation

Calculus

Read Explanation

Mechanics Maths

Read Explanation

Theoretical and Mathematical Physics

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.