Question

Whats the answer to this question and how did you do it?? thanks,,, (:

Answer 1

$5x+3=3x+7\\ 5x-3x=7-3\\ 2x=4\\ x=2$

Answer 2

5x+3=3x+7
-3     =   -3
2x+3=7
     -3= -3
2x=4
x=2