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x=y+26.............................................................x=y+26
x+3=3(y+3)..........x+3=3y+9........x=3y+9-3.........x=3y+6
hacemos igualacion
3y+6=y+26
3y-y=26-6
2y=20
y=20/2
y=10
si y=10
x=y+26
x=10+26
x=36
la madre de Luis tiene 36 años
Luis tiene 10 años