Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36
Given ⇒ 3(x − 4) + 5x = 9x − 36
Step 1 ⇒ 3x − 12 + 5x = 9x − 36
Step 2 ⇒ 3x + 5x − 12 = 9x − 36
Step 3 ⇒ 8x − 12 = 9x − 36
Step 4 ⇒ 8x − 8x − 12 = 9x − 8x − 36
Step 5 ⇒ 0 − 12 = x − 36
Step 6 ⇒ −12 = x − 36
Step 7 ⇒ −12 + 36 = x − 36 + 36 Step 8 ⇒ 24 = x + 0 Step 9 ⇒ 24 = x
Which property yields Step 4?

Question

Consider the sequence of steps to solve the equation: 3(x − 4) + 5x = 9x − 36
 Given ⇒ 3(x − 4) + 5x = 9x − 36
Step 1 ⇒ 3x − 12 + 5x = 9x − 36 
Step 2 ⇒ 3x + 5x − 12 = 9x − 36
Step 3 ⇒ 8x − 12 = 9x − 36 
Step 4 ⇒ 8x − 8x − 12 = 9x − 8x − 36 
Step 5 ⇒ 0 − 12 = x − 36 
Step 6 ⇒ −12 = x − 36 
Step 7 ⇒ −12 + 36 = x − 36 + 36 Step 8 ⇒ 24 = x + 0 Step 9 ⇒ 24 = x 
Which property yields Step 4?

UhhhKhakis · Answer

Here are the answer choices: 
A) Subtraction Property of Equality Eliminate
B) Commutative Property of Addition 
C) Addition Property of Equality 
D) Additive Inverse Property

danielpili · Answer

im b ig

Richy7Boy · Answer

well choose the best one

snowflake0531 · Answer

If there wasn't these stuff, and the problem wanted you to find x, would you be able to subtract 8x from each side? If you can, why do you think you can do that?