Solve 0 = 2*r - 4*r + 3*u - 5, -3*u + 15 = 0 for r.

5

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

-2

Solve -5*w - 3 = -2*x - 1, -4*x = -4 for w.

0

Solve -4*f - 3*x - 6 = 2, 2*x = 2*f + 4 for f.

-2

Solve 2*z - 2*k = 0, -17*z + 16*z - 3 = -4*k for z.

1

Solve l = -l + 2*j - 8, 5 = l + 2*j for l.

-1

Solve 6*j + 2*r - 12 = 4, -28 = -3*j - 5*r for j.

1

Solve 2*x + 5 = -5*l, 0 = -5*x + 2*l - l + 28 for x.

5

Solve -5*q - 2*y = -10*q - 20, -2*q = 2*y - 6 for q.

-2

Solve y = 2*d - 5, -2*d + 3*y + 11 = 16 for d.

5