Solve -4*x + 20 = -2*b + 12, -5*b + 12 = -2*x for b.

4

Solve 4*a = -4*k - 16, -5*k + 2*k - 2 = -2*a for k.

-2

Solve 0 = i + 4*c - 20, 107 = 5*i + 5*c + 82 for i.

0

Solve 4*q = 4*k - 28, -q - 4*k + 4 = -4 for q.

-4

Solve 17*o - 4*v = 19*o - 14, 4*o + v = 21 for o.

5

Solve i = -4*j - 139 + 136, -4*i + j + 5 = 0 for i.

1

Solve -5 = 3*k - a + 2, 0 = k + 3*a + 19 for k.

-4

Solve 35 = -5*m + 3*d, -22 = -4*m + 7*m - 2*d for m.

-4

Solve 0*j + d = -2*j - 13, -5*d = -5*j + 5 for j.

-4

Solve -9*r + 5 = a - 11*r, -2*r + 10 = -4*a for a.

-5