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2 (x+y)=92 ........2(x+y)=92(3).......2x+2y=276
3
3 (x-y)=3........3(x-y)=3(8)............3x-3y=24 didivimos todo entre 3
8
x-y=8 ............x=y+8
sustituimos x=y+8 en la primera ecuacion.
2x+2y=276
2(y+8)+2y=276
2y+16+2y=276
2y+2y=276-16
4y=260
y=260/4
y=65
si y=65
x=y+8
x=65+8
x=73
los numeros son 73 y 65