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Efectuando los productos en ambos miembros de la igualdad:
6m² + 12m - 15m - 30 = 6m² - 24m - 5m + 20
Reduciendo términos semejantes:
6m² - 3m - 30 = 6m² - 29m +20
6m² - 6m² - 3m + 29m = 20 + 30
26m = 50
m = 50 / 26
m = 25 / 13