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0,5*(1-12x)=1,5*(x-4)
0.5-6x=1,5x-6
-6x-1,5x=-6-0.5
-7,5x=-6,5
x=-6,5/-7,5
x = 0.866667
0.5(1-12x) = 1.5(x-4)
1/2 (1-12x) = 3/2(x-4)
1 - 12x/2 = 3x-12/2
2(1-12x) = 2(3x-12)
2 - 24x = 6x - 24
2 + 24 = 6x +24
26 = 30x
26/30= x
simplificamos y nos queda
13/15=x