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la edad de luis es 26
1) n+n+1+n+2+n+3=30
4n=24
n=6 Los números son 6,7,8,9
2) x-2=2y y x+y=38 (Lo planteé así porque x=2y-2 da números decimales
x=2y+2
2y+2+y=38
3y=36
y=12 y x=26