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x-(-1)=6
x+1=6
x=5
y=-1
e)
-x-3*(-2x)=5
-x+6x=5
5x=5
x=1
y=-2
h)
x=11-y
2(11-y)-y=4
22-2y-y=4
-3y=-18
y=6
x=11-6=5