Question

10y-5 (1+y) igual 3 (2y-2)-20

Answer 1

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

Answer 2

Resposta:

y = 21

Explicação passo-a-passo:

$10y -5(1+y)=3(2y-2)-20\\10y-5-5y=6y-6-20\\5y-5=6y-26\\5y-6y=-26+5\\-y=-21\:\times(-1)\\\boxed{y=21}$