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La tercera parte = m/3
Resolvemos :
m/3 + 6 = m - 2
(m + 3 * 6)/3 = m - 2
(m + 18)/3 = m - 2
m + 18 = 3 (m - 2)
m + 18 = 3m - 6
m - 3m = - 6 - 18
- 2m = - 24
m = -24/-2
m = 12
Solución :El número es 12