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Source: — Problem Solving |

by vishubn » Sun Oct 05, 2008 6:26 am
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start with known

by artistocrat » Mon Oct 06, 2008 10:13 pm
start with 4+?=1; ?=-3

+ -3 -9 0
4 1 -5 4
10 7 1 10
5 2 -4 5

m+n=4+1=5
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