Question

x-y =8
x+y2 = 14 me ajuda????

Answer 1

Resposta:

x-y=8

×+y2=14

×-y=8 (×2)

×+y2=14 (×1)

2×-y2=16

×+y2=14

3×=30

×=10

×-y=8

10-y=8

-y=8-10

-y=-2 (-1)

y=2

Answer 2

Relação:

¦x-y =8

¦x-2y = 14 x (-1)

¦x-y = 8 x-x = 0

¦-x+2y = - 14 - y+2y = y

____________ 8-14 = - 6

y= - 6

x-y = 8

x - 6 =8

x = 8 + 6

x = 14