////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page43.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Log 7) (^ _E 2) 6 7 4)

Problem:
(= (cdot #[[1945 9101 4905 5313 3051 535 2743]
           [4431 7972 9637 847 2958 1861 1884]
           [5939 149 9375 7986 2752 692 6778]
           [7658 4985 8787 1526 9930 6169 4205]
           [8511 4091 1723 7522 5767 7786 8431]
           [4895 8095 1639 77 5907 8244 6810]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]])
   #[[7389] [560] [9893] [650] [2272] [3042]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]]
   #[[95025760848631950632494]
     [21069357894353539186006]
     [-49646298884375755767505]
     [-52154143485635602079863]
     [25141566128827413312346]
     [-125218446984420590731716]
     [48967437184672588335177]])