Envision Math 2.0: Grade 7, Volume 2
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Envision Math 2.0: Grade 7, Volume 2 View details
3. Solve Equations Using the Distributive Property
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Exercise 9 Page 269

Use inverse operations in order to isolate the variable.

See solution.

Practice makes perfect
We want to solve the following equation. 1/8(p+24) = 9 First, let's use the Distributive Property to simplify the left-hand side of the equation.

(1/8 * p )+ (1/8 * 24 ) &= 9 ⇓ & (p/8 )+ (3 ) &= 9 Next, let's use inverse operations in order to isolate the variable. First, let's use the Subtraction Property of Equality and subtract 3 from both sides of the equation. That way, we will isolate p8 on the left-hand side of the equation. p/8&= 9- 3 &⇓ p/8&= 6 Next, let's use the Multiplication Property of Equality and multiply both sides of the equation by 8. That way, we will isolate p on the left-hand side of the equation. p &= 6* 8 &⇓ p &=48