Solve 8 = 2*r - 2*a, 9*r - 2*a = 8*r + 9 for r.

-1

Solve 3*k = 3*l + 24, -k - 19 + 3 = 5*l for k.

4

Solve 5*f + 4 = -3*l + 5, 2*f = -2*l + 2 for f.

-1

Solve 4*t - 10 = -4*l + 2*t, 5*t = -l + 7 for l.

2

Solve 2*u = -74*v + 72*v - 20, 3*v = 5*u - 14 for v.

-8

Solve -3*k + 22 = -q + 24, -5*k + 5*q = 0 for k.

-1

Solve 4*j - 2 = 2*k + 6*j, -2*k = 4*j for k.

-2

Solve 2*d = 4*q + 32, -2*q = 40*d - 42*d + 20 for d.

4

Solve 5*w - 3*o = -29, -22 = w + 2*o - 24 for w.

-4

Solve -244*l + 242*l = 6*c - 16, -2*l + 12 = 4*c for c.

2