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8x - 5 = 4x + 11
8x - 4x = 11 + 5
4x = 16
x = 16/4
x = 4
Respuesta.
x = 4
Solución:
8x-4x=11+5
4x=16 / :4 (los dos puntos significa que se divide por 4)
x=4
Saludos.