... Exercises Linear Algebra Jim Hefferon21131 23 121x1·13x · 1 2x · 3 121686 28 18 Linear Algebra, by ... straightforward cancelling on both sides of the i-th equation), which says that (s1, . . . , sn)10 Linear Algebra, by Hefferonsolvesa1,1x1+ a1,2x2+ ··· + a1,nxn= d1...ai,1x1+ ... b,c, d, e, f votes respectively. We know thata + b + e = 11d + e + f = 12a + c + d = 1412 Linear Algebra, by Hefferonfrom the number preferring A over B, the number preferring C over A, and...