Solve -t = -3*r - 18, -2*r - 2 = t - r for t.

3

Solve p = -3*w + 4, 7*p + 13 = 2*p - 4*w for p.

-5

Solve 3*k - 12 = -9*o + 4*o, -20 = -5*k + 2*o for k.

4

Solve -4*v - 11*u + 14*u = -32, 5*v + 4*u = 9 for v.

5

Solve -5*x - 2*i = -6*i + 21, 0 = x - 5*i for x.

-5

Solve -5*i + 0*i = 3*v + 22, 5*i = 2*v - 2 for v.

-4

Solve x - t = -6, -t + 18 - 8 = -2*x for x.

-4

Solve -4*w + k - 8 = -k, 3*k - 4 = 4*w for w.

-4

Solve 3*f + 31*k = 32*k - 6, 0 = -4*f + 5*k - 8 for f.

-2

Solve -a = -5*i + 4, -7*a = -4*i - 8*a + 5 for i.

1