Solve 7*s - 9*s = r - 5, -2*s = 2*r - 2 for r.

-3

Solve -2*u - 1 = -5*z + u, -z - 3*u + 11 = 0 for z.

2

Solve 311*w - 4*c + 4 = 315*w, 5 = -w + c for w.

-2

Solve -4*c = 2*n + 16, 0 = -6*n + 2*n + 5*c - 6 for n.

-4

Solve 5 = -5*z + 3*f - 7*f, 0 = -4*z + f - 25 for z.

-5

Solve 9*q = -4*s + 4*q + 19, s + 2*q = 7 for s.

1

Solve 29*j - 28*j + 7 = -r, 0 = 4*r + 3*j + 26 for r.

-5

Solve -14 = 5*t - l, 0 = -8*t + 12*t + 5*l + 17 for t.

-3

Solve -4*f = -2*b + 18 + 12, 5*b - 10 = -3*f for f.

-5

Solve -t = 2*c + 1, -5*t - 3*c = -8 - 8 for t.

5