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2x + 11,5 = - 3x + 1 - 2x - 2
2x + 11,5 = - 5x - 1
2x + 5x = - 1 - 11,5
7x = 12,5
x = 12,5/7
El valor de x es 12,5/7
Recuerda que todo número elevado a la cero es 1