Set the x’s equal to each other, so move them to the same side.
2+5x+3x=7
Now move the 2 over to set it equal to 7.
5x+3x=7-2
Add/Subtract as necessary.
5x+3x=8x
7-2=5
8x=5.
Divide to make the X stand alone to find the answer. x=5/8.
Your answer is 5/8ths.