a) x-y = 1
b)2x+y=1
c)3x-2y=12
d)x+y=-5
a) x-y =1
x= y+1
B) 2x+y= 1
2x= 1-y / :2
x =
c) 3x - 2y = 12
3x= 12-2y/: 3
d) x+y = -5
x= -5 -y
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a) x-y =1
x= y+1
B) 2x+y= 1
2x= 1-y / :2
x =
c) 3x - 2y = 12
3x= 12-2y/: 3
d) x+y = -5
x= -5 -y