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x-3x=-2-1
-2x=-3
x=3/2=1 1/2
b.5-x=7+x
-x-x=7-5
-2x=2
x=2/-2=-1
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x+1=3x-2
x=3x-2-1
x=3x-3
x-3x=-3
-2x=-3
2x=3
x=3/2
b.
5-x=7+x
-x=x+7-5
-x=x+2
-x-x=2
-2x=2
x=2/-2
x=-1