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Padre x-2 x x+10
Hijo 3(y-2) y 2(y+10)
resolviendo
x-2 = 3(y-2) x+10 = 2(y+10)
x-2 = 3y-6 x+10 = 2y+20
x-3y = -6+2 x-2y = 20 - 10
x-3y = -4 x-2y = 10
x-3y = -4 ..... I por (-1)
x-2y = 10 ....... II
-x+3y = 4
x-2y = 10
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y = 14 edad de hijo
el hijo tiene 14 años