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a + 3 , b + 3 = a - b = 33
Hallar a + b = ?
ab = 3a
el "a" pasa al otro lado dividiendo quedaria :
b = 3
reemplazando b + 3 = 6 . a - b = 33
a - 3 = 33
a = 36
a + b = ?
3 + 36 = 39