Let s = -1 + 1. Let m = 3 - s. Solve m*l - 3 - 12 = 0 for l.

5

Suppose 2*y - 7*y = -10. Suppose -a + 12 = 3*t, a + 6 = t + y*a. Suppose 3*p + 2*w = 0, -4*p + p - w + t = 0. Solve 0 = 3*l + p*l - 15 for l.

3

Let w = -9 + 11. Suppose w*m + 2 = 3*m. Solve 0 = -2*d - m*d - 20 for d.

-5

Let l = 20 - 14. Let z be (l/4)/(27/(-36)). Let n be (z - 6)/(-3 - -1). Solve a = n*a for a.

0

Suppose 0 = 4*d - 3*s - 42, 0*d - 26 = -2*d - s. Suppose 2*b = -2*b + 20. Suppose 0 = -5*p - 3 + 13. Solve -b*f = -p*f - d for f.

4

Let a(f) = f**2 - 4*f + 5. Let j be a(4). Suppose -j*b - 15 = -2*h + 7*h, 3*b - 11 = h. Suppose -2*w = -5 - 3, -2*o = b*w - 38. Solve 2*c = -c + o for c.

5

Let n be 11⁄3 - 4⁄6. Let j be (-1 - -2) + 3/(3/(-1)). Solve n*r = -j*r + 3 for r.

1

Suppose -3*n - p - 23 = 0, 3*n - 2 = 5*p - 31. Let h be 4/n - 14/(-4). Solve h*s = -s for s.

0

Let t be (-3)/(5/(-10)*2). Solve -t*q + 9 = -0 for q.

3

Suppose 0 = -3*i + 5 + 1. Suppose -i*c + 3*c = 0. Let f = 4 + -3. Solve c = 5*h + 9 + f for h.

-2