me ajudemmm
a) x-y= 1
x+y=9
b) x=2+y
x+y=6
c) x-y=2
x+y= 12
d) y=3-5x
x+2y= 15
e) x+y = 5
3.(x-y)= -3
f) x+y=7
x- y = 3
g) x+y= 2
2x-y =1
a) x-y= 1
x+y=9
b) x=2+y
x+y=6
c) x-y=2
x+y= 12
d) y=3-5x
x+2y= 15
e) x+y = 5
3.(x-y)= -3
f) x+y=7
x- y = 3
g) x+y= 2
2x-y =1
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