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x=4 y x=4 son equivalentes
2x =8 y 4x-6 =16
x=4 y x=22/4
no son equivalentes
+
X/3+1=4 Y x-1=8
x=9 y x=9 son equivalentes
(x-2)/5=1/2 y (x+1)/2=5
2x-4=5 y x+1=10
2x=9
x=9/2 x=9 no lo son