Question

Identify the property that justifies each step asked about in the answer area below.
Line 1: , left bracket, 2, x, plus, 5, right bracket, plus, x
Line 1: =
(2x+5)+x
Line 2: , left bracket, 5, plus, 2, x, right bracket, plus, x
Line 2: =
(5+2x)+x
Line 3: , 5, plus, left bracket, 2, x, plus, x, right bracket
Line 3: =
5+(2x+x)
Line 4: , 5, plus, 3, x
Line 4: =
5+3x

Answer 1

Line 1: Associative property of addition
Line 2: Commutative property of addition
Line 3: Associative property of addition
Line 4: Simplification