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Envision Math 2.0: Grade 7, Volume 1

EM

Envision Math 2.0: Grade 7, Volume 1 View details

1. Write and Evaluate Algebraic Expressions

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Exercise 6 Page 192

Substitute 0.4 for x in the expression.

-4.35

Practice makes perfect

To evaluate the given expression for x=0.4, we should substitute 0.4 for x in the given expression and then simplify.

3/8x-4.5

x= 0.4

3/8( 0.4)-4.5

MoveRightFacToNum

a/c* b = a* b/c

3(0.4)/8-4.5

Multiply

1.2/8-4.5

Use a calculator

0.15-4.5

Subtract term

-4.35

Subchapter links

Do You Understand? p.192

Do You Know How? p.192

Practice & Problem Solving p.193-194

Assessment Practice p.194