2*a=-18.4
7*a+8*b=25.3
-4*a+3*b=-34.9
9*a+9*b+2*c=-94.7
3*a+7*b+9*c=-74.3
8*a-3*b+6*c=-91.5
-2*a-7*b-2*c-3*d=-0.4
-6*a-4*b+2*c+7*d=-26.7
-2*a-4*b+3*c+9*d=9.1
9*a+4*b+4*c+7*d=73.2
5*a+3*b+3*c-3*d-8*e=-77.6
-5*a+4*b+2*c-4*d-3*e=-76.9
9*a+6*b+9*c+8*d-7*e=13.6
4*a-7*b-9*c+9*d+4*e=156.7
9*a+5*b-3*c+6*d-3*e=74.7