Question

8x+10y=12,para x=4
Pfvr e pra amanha

Answer 1

8.4+10y=12

32+10y=12

10y=12-32

10y=-20

y=-20/10

y=-2

Answer 2

Apenas substitua o valor de x!

8.4+10y=12

32+10y=12

10y=12-32

10y=-20

y= - 20/10

y= -2