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x+2-5=-3
x=-3+5-2
x=0
x+1/2+x=x+2/3 /*6
6x+3+6x=6x+4
6x+6x-6x=4-3
6x=1 /6
x=1/6
4-x/5=8-x/4 /*20
80-4x=160-5x
-4x+5x=160-80
x=80