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rodikova [14]
3 years ago
5

Identify the property that justifies each step asked about in the answer area below. Line 1: \text{Line 1: }\phantom{=}Line 1: =

4(8+9x)\,\,4(8+9x)4(8+9x) Line 2: \text{Line 2: }\phantom{=}Line 2: = 4(9x+8)\,\,4(9x+8)4(9x+8) Line 3: \text{Line 3: }\phantom{=}Line 3: = 36x+32\,\,36x+3236x+32 Line 1 to Line 2: Line 2 to Line 3:
Mathematics
1 answer:
kipiarov [429]3 years ago
7 0

Answer:

1. Commutative Property of Addition

2. Distributive property

Step-by-step explanation:

Given

Line 1:  4(8+9x)

Line 2:  4(9x+8)

Line 3: 36x+32

Required

Justify each step

From Line 1 to 2:

The property from Line 1 to 2 depicts a + b = b + a;

i.e.

4(8 + 9x) = 4(9x + 8)

This is referred to as Commutative Property of Addition

From Line 2 to 3:

The property here depicts a(b + c) = a * b + b * c

i.e.

4(9x + 8)  = 4 * 9x + 4 * 8

4(9x + 8) = 36x + 32

This is referred to as Distributive property

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