Question

10y-5+5y=6y-6-20

me ajudem por favor .. está valendo 10..

Answer 1

10y-5y-6y=-6-20+5
-1y=-21
y=-21/1
y=-21

Answer 2

10y-5+5y=6y-6-20
10y+5y-6y= -6-20+5
15y-6y= -26+5
9y= -21
y= -21/9
y= -7/3