Question

calcule 4y + 15= y+60

Answer 1

       4y + 15 = y + 60
       4y - y = 60 - 15
             3y = 45
               y = 45/3
               y = 15

Answer 2

4y+15= y+60
4y-y=60-15
3y=45
y= 45/3
y= 15