Question

How do I solve 3x + 3 = 9?

Answer 1

Ummmmm lets see.... 1? Because then 3 times 1 is 3 + 3 = 9 so that's the only answer that works

Answer 2

3(x)+3-9=?
? = 0

3 + 3 = 6 we have to subtract 3x from 6
So,  3(x) - 6 

3 - 3 = 0
3 = 0

6 ÷ 3 = 2
So, x - 2 = 0

x + 2 = x
0 + 2 = 2

One Solution was found in this problem,
so x = 2