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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

3. Write and Solve Addition and Subtraction Equations

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Exercise 7 Page 192

Use the Subtraction Property of Equality to isolate a on the right-hand side of the equation.

a=9

Practice makes perfect

To solve the equation, we have to isolate a on one side. Here, we can use the Subtraction Property of Equality and subtract 13 from both sides of the equation. Let's do it!

22=13+a

LHS- 13=RHS- 13

22- 13=13+a- 13

CommutativePropAdd

Commutative Property of Addition

22-13=a+13-13

Subtract terms

9=a

Rearrange equation

a=9

Subchapter links

Do You Understand? p.192

Do You Know How? p.192

Practice & Problem Solving p.193-194

Assessment Practice p.194