# math

Consider the sequence of steps to solve the equation: 2(x − 4) + 6x = 9x − 10
Which step in solving this equation is justified by the Commutative Property of Addition?
Given ⇒ 2(x − 4) + 6x = 9x − 10
Step 1 ⇒ 2x − 8 + 6x = 9x − 10
Step 2 ⇒ 2x + 6x − 8 = 9x − 10
Step 3 ⇒ 8x − 8 = 9x − 10
Step 4 ⇒ 8x − 8x − 8 = 9x − 8x − 10
Step 5 ⇒ 0 − 8 = x − 10
Step 6 ⇒ −8 = x − 10
Step 7 ⇒ −8 + 10 = x − 10 + 10***
Step 8 ⇒ 2 = x + 0
Step 9 ⇒ 2 = x

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