if m+n+mn=118 then what is m+n
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Adding on on both sides
1+m+n+mn=119
(1+m)(1+n)=17*7
(1+m)(1+n)=(1+16)(1+6)
Therefore m=16 and n=6
1+m+n+mn=119
(1+m)(1+n)=17*7
(1+m)(1+n)=(1+16)(1+6)
Therefore m=16 and n=6
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