Solve -3*h + 21 = 42*w - 35*w, -w = 3*h - 3 for w.

3

Solve -2*c - 3*j - 5 = -7*c, 0 = -c - 2*j - 12 for c.

-2

Solve -3*z + 5*c + 31 = -0*c, 3*z - 26 = 4*c for z.

2

Solve 4*u + 16*i = 18*i - 12, -u + 3*i - 3 = 0 for u.

-3

Solve 4*z - 3*z + 3*i = -3, 5*i = 4*z - 5 for z.

0

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

-3

Solve 3*f - 4 = -a, -28*a + 32*a = 5*f - 35 for f.

3

Solve 3*l = -5*n + 5, -13 + 0 = -2*n + l for n.

4

Solve -5*t + r - 25 = 0, 0 = -6*t + 2*t + 5*r - 20 for t.

-5

Solve -5*d + 5*a + 15 = 0, -a = -2*d - 0*d + 3 for d.

0