////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page6.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Sin 1) (^ _E 1/2) 6 7 2)

Problem:
(= (cdot #[[84 14 70 98 48 7 89]
           [65 6 65 25 2 32 16]
           [30 29 89 99 62 25 63]
           [6 7 98 37 10 65 67]
           [27 51 70 99 91 91 4]
           [4 39 12 39 66 89 48]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]])
   #[[16] [48] [72] [12] [70] [70]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]]
   #[[-1613499937]
     [26273567357]
     [-6687254996]
     [13765702105]
     [-26225726957]
     [2083167658]
     [1472200174]])