Question

las operaciones de
X+Y=20
X-2Y=8

Answer 1

x + y = 20

x = 20 - y

x + 2y = 8

x = 8 - 2y

20 - y = 8 - 2y

-y + 2y = 8 - 29

y = -21

x = 20 - (-21)

x = 20 + 21

x = 41