Question

12. Alexa solves an equation using the steps below as her first three steps. Step 1: 3(x - 4) = x + 8 Step 2: 3x - 12 = x + 8 Step 3: 2x – 12 = 8 Which operation did Alexa use on both sides of the equation to go from Step 2 to Step 3? A subtracted 8 B subtracted x C added 2x D added 12​

Answer 1

B. Subtracted x

Explanation:

Answer 2

b) She subtracted x from both sides

Explanation:

Step 1: 3(x - 4) = x + 8

Step 2: 3x - 12 = x + 8

Step 3: 2x – 12 = 8

3(x - 4) = x + 8

3x - 12 = x + 8

- x - x (here, she subtracted x from both sides)

2x - 12 = 8

Hope this helps!