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y edad de Camila
ahora x-5= y/2 (1)
x+y =50 (2)
despejo x en (1) x-5=y/2
x= y/2+5
reemplazo x en (2) x+y=50
(y/2+5) +y =50
(y+10)/2 +y = 50
(y+10+2y)/2=50
3y+10=50*2
3y= 100-10
y=90/3
y= 30
x+y=50
x+30=50
x= 50-30
x=20
edades 30 y 20 años