Solve -4*a + x - 20 = -x, -5*a + 2*x - 23 = 0 for a.

-3

Solve -3*q + 15 = -2*s + 3*s, 0 = -3*q - 3*s + 21 for q.

4

Solve -3*a + r + 17 = 0, 0*r - 4*r = -2*a + 28 for a.

4

Solve 14*a = 11*a - 6, -13 = -3*o + 2*a for o.

3

Solve 2*f = 4*f - 5*t - 25, -2*f + 13 = -t for f.

5

Solve 4*d - 2*y - 12 = 0, 13*y = 5*d + 9*y - 9 for d.

5

Solve 2*k + 3*d - 19 = 0, 5*k - 4*k + 2*d - 10 = 0 for k.

8

Solve 5 = 5*i, t + 0 = 3*i - 4 for t.

-1

Solve 6 = x - 2*l, 6*x - 5*l = 2*x + 21 for x.

4

Solve c - 6*c - 2*u = -5, 0 = 2*c + u - 1 for c.

3