Solve -4*r + 6*a = 4*a - 12, -6 = 3*a for r.

2

Solve -5*u - 15 = 0, 0*u - u + 13 = 4*w for w.

4

Solve 4*l = 9*l - 2*s + 21, 0 = -5*s - 10 for l.

-5

Solve -8*q = -r - 9*q - 7, -5*r - 26 = 2*q for r.

-4

Solve -6 = f - x, -2*f + 0*x + 3*x - 16 = 0 for f.

-2

Solve -2*p = -2*o + 5 + 5, -19 = 5*p - 3*o for p.

-2

Solve 0 = -2*j - 0*j + 3*s + 1, -17 = -j - 4*s for j.

5

Solve -4*o = -2*l + 20, -7*o = 2*l - 8*o - 5 for l.

0

Solve 14 = -t + r + r, t - 6 = -2*r for t.

-4

Solve 22 = a - 3*g, -3*g - 26 = 88*a - 93*a for a.

1