Question

Justify each step in the equation solution below with either a property of real numbers (associative, commutative, distributive) or a property of equality (addition or multiplication). 5(x+2)=30 Step 1: 5x+10=30 Justification: Justification Step 2: 5x+10+-10 = 30+-10 5x= 20 Step 3: Justification: 5 x 20 5 5 x=4

Answer 1

You have the following equation:

$5(x+2)=30$

with the following steps to find the value of x:

5x + 10 = 30 distributive property

5x = 20 addition property of equality (it has added -10 both sides)

x = 4 division property of equality (it has divided by 5 both sides)