Question

× = 3 y - 1 2 × + y = 12​

Answer 1

Resposta:

x=3y-12

x+y=12

x=12-y

12-y=3y-12

-y-3y=-12-12

-4y=-24

y=-24/-4

y=6

x+y=12

x+6=12

x=12-6

x=6