math
posted by Speedo .
Find the ordered quintuplet (a,b,c,d,e) that satisfies the system of equations a+2b+3c+4d+5e=177,
2a+3b+4c+5d+e=154,
3a+4b+5c+d+2e=146,
4a+5b+c+2d+3e=138,
5a+b+2c+3d+4e=165
This a really hard questioon but don't give up, please.

(a,b,c,d,e) = (8,5,12,12,15)
Not hard at all. Mosey on over to
http://www.gregthatcher.com/Mathematics/GaussJordan.aspx
to see how it falls out using Gaussian elimination. 
(8,5,12,12,15)