Question

I have no idea how to do this. I found the answer but now I have to explain it.

Answer 1

x=2

Explanation:

3+x+x=7

2x=4

x=2

Answer 2

You have 3 + 2 + 2 which is the same as 7 on the other side.

Explanation:

3 + 2 + 2 is 7