I'm not sure if this is what you're looking for, but maybe it will help:
Isolate y for 5=3x+2y
Switch sides:
3x+2y=5
Subtract 3x from both sides:
3x+2y-3x=5-3x
Simplify:
2y=5-3x
Divide both sides by 2:
2y/2 = 5-3x/2
Simplify:
y= 5x-3/2
I hope this helped you! :)