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reemplaxo en a+b=14
3k + 4k= 14
7k=14
k=2
reemplazo en a=3k...a= 3(2)...a=6 y b=4k...b=4(2)...b=8
2) a/56=b/7...a/b=8.....a= 8k y b=k
8k-k=7...k=7..a= 56 y b= 7
3)a/b=10/3...a=10k y b= 3k ....7k=7...k=7
a=70 b=21