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x + 5 = 2x - 80
x - 2x = - 80 - 5
- x = - 85
x = 85
Respuesta.
x = 85
COMPROBAMOS LA SOLUCIÓN
x + 5 = 2x - 80
85 + 5 = 2 (85) - 80
90 = 170 - 80
90 = 90
La solución es correcta!!!