Respuesta:
60x - 20 +20x - 10 + 25x = 180
105x = 180 + 30
x = 210/105
x = 2
Espero te sirva :)
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Respuesta:
60x - 20 +20x - 10 + 25x = 180
105x = 180 + 30
x = 210/105
x = 2
Espero te sirva :)