9*a=54.9
-5*a+3*b=7.4
-4*a+7*b=0.4
-5*a+6*b+7*c=-30.7
-7*a+5*b-6*c=74.7
8*a+5*b-3*c=15
-5*a+4*b+7*c+5*d=-23.2
-8*a-9*b-2*c-4*d=-110.2
2*a-4*b-3*c+7*d=-71.7
9*a-7*b+3*c-3*d=55.8
-4*a+2*b-3*c-3*d+8*e=24.5
-8*a-9*b-5*c-7*d-5*e=74.2
-5*a-2*b-8*c-5*d-4*e=62.8
-6*a-7*b+3*c+6*d+7*e=-30.1
7*a-3*b+8*c+6*d-3*e=-36.4
