Question

resolva a equação a seguir
c) 10y-5 (1+y)=3 (2y-2)-20

Answer 1

10y-5(1+y)= 3(2y-2)-20
10y-5-5y=6y-6-20
10y-5y-6y=-6-20+5
10y-11y=-26+5
-y=-21⁽⁻¹⁾
y=21

Answer 2

10 y -5(1 + y)=3(2 y-2) -20

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

10 y - 5 y - 6 y = - 6 - 20 + 5

10 y - 11 y = - 21

- y = - 21*(-1)

y = 21