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x+y=191........................................................................x+y=191
x =4+16 .............. x = y(4)+16 .............. x = 4y+16 .........x=4y+16
y y y y y y
sustituimos x=4y+16 en la primera ecuacion
x+y=191
4y+16=+y=191
4y+y=191-16
5y=175
y=175/5
y=35
si y=35
x+y=191
x+35=191
x=191-35
x=156
su diferencia es:
156-35=121
la diferencia de dichos numeros es: 121