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a + b = 15
a/2 + b/3 = 6
Sistema de ecuaciones lineales
se tiene un sistema 2×2 : dos ecuaciones con dos incognitas.
a+b = 15
3a+2b = 36
a = 15 - b
3(15-b)+2b = 36
45-3b+2b = 36
45-36 = b
b = 9
a = 15-b
a = 15-9
a = 6
Por tanto los números son 6 y 9