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a)
2x/4 + 4 = x/2 + 1
2x/4 - x/2 = 1 - 4
2x/4 - 2x/4 = 1 - 4
(2x - 2x)/4 = 1 - 4
0x/4 = - 3
La ecuación no tiene solución.
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b)
x/4 = - 3
x = - 3(4)
x = - 12
El valor de x : - 12.