Question

resolva as equações a)3( 2y - 3) +2 (y +1) =3y + 18 b)2 (a + 1) -3 ( 2a-5) =6a - 3​

Answer 1

a)3(2y-3)+2(y+1)=3y+18

6y-9+2y+2=3y+18

8y-7=3y+18

8y-3y=18+7

5y=25

y=5

b)2(a+1)-3(2a-5)=6a-3

2a+2-6a+15=6a-3

-4a+17=6a-3

-4a-6a=-3-17

-10a=-20

a=2