Solve -5*r - 5*q = -0*r + 80, -5*r - 40 = -4*q + 85 for r.

-21

Solve 6*i - 3*b = 26 + 7, 42 = i + 2*i - 10*b for i.

4

Solve -5*o + 6 - 6 = 7*v - 4, -4*v = 4*o - 8 for v.

-3

Solve 23*w = 867*c - 869*c + 159, 3*c = -2*w + 76 for w.

5

Solve r = 2*x + 20, -r + 5*r - 9*r = x - 89 for r.

18

Solve 2*t = l + 22, 0 = -194448*l + 194452*l + 80 for t.

1

Solve -5*r + 2*t - 56 = 0, -r + 853*t - 855*t + 126 = -13*r for r.

-10

Solve -3*l - 74*b - 55 + 41 = 0, -b = 1 for l.

20

Solve -65 = 15*n - 2*v, -610 + 640 = -5*n - v for n.

-5

Solve -6*f + 5*u + 34 = -f - 51, 0 = -f - 22*u - 305 for f.

3