Question

Gente me ajudem

a) 10y-5(1+y)=3(2y-2)-20
b) 13x +1-10x=5+x

Answer 1

Olá,

a) 10y-5(1+y)=3(2y-2)-20

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

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

-y=-21 (-1)

y=21

b) 13x+1-10x=5+x

13x-10x-x=5-1

2x=4

x=4/2

x=2

Espero ter ajudado!!!