Question

The steps Thomas used to solve an equation are shown.

Given: 10-2(x-1)=8
Step 1: 8(x-1)=8
Step 2: x-1=1
Step 3: x=2

Answer 1

there is an error in step 2

Explanation:

10-2(x+1)=8

8(x-1)=8

8x-8=8

+8 +8

8x= 16

/8 /8

x=2

Answer 2

There is an error in step 2

Explanation:

you have to multiply -2 with x and -1 first and not subtract -2 from 10 first.