Question

resolva os sistemas 2x-y=0 x+y=6

Answer 1

2x-y=0
x+y =6
--------

x = 6-y

2(6-y)-y = 0

12-2y-y = 0

-3y = -12

y = 4

x = 6-y

x = 6-4

x = 2

tá valendo?