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1x-5x=2
-4x=2
x=-(1/2)
_________
b)
5x-8x=-1
-3x=-1
x=(1/3)
________
c)
4x+3x=62
7x=62
x=(62/7)
_________
d)
x+1x=-13
2x=-13
x=-(13/2)
__________
e)
x-1x=1
falso
__________
f)
5x-2x=-4
3x=-4
x=-(4/3)
___________
g)
2x+3x=2x
5x-2x=0
3x=0
x=0