Question

Which is the first incorrect step in the solution shown above ?

Answer 1

Step 2

Explanation:

2x was moved to 3x just to add.

It was supposed to be 3x - 2x = x

Answer 2

Step 2 is incorrect

Explanation:

Step 2 is incorrect

step 1: 3x + 15 = 2x + 35

step 2: subtract 2x from both sides

3x + 15 - 2x = 2x + 35 - 2x

x + 15 = 35