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4x - 5 + x = 90
4x + x = 90 + 5
5x = 95
x = 95/5
x = 19
Respuesta :
x = 19
(4x - 5) + x = 90
4x - 5 + x = 90
5x - 5 = 90
5x = 90 + 5
5x = 95
x = 95/5
x = 19
Respuesta.
El valor de x es 19