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18x +48 = 48x+80
18x-48x = 80-48
-30x = 32
x=- 32/30 a qui simplificas sacas mitad
x= -16/15
18x+48=48x+80
48-80=48x-18x
-32=30x
-32/30=x
-16/15=x
-1.006=x