Let j be (12/3)/((-8)/(-20)). Let d = -14 + j. Let b = 6 + d. Solve u - b*u - 2 = 0 for u.

Let c be 6/(-3) + (9 - 2). Suppose -c*o + 15 = -3*a + 6*a, 0 = 5*o + 2*a - 20. Solve -4*d + o = -14 for d.

5

Suppose -z = -2, 5*g + z - 11 = 2*g. Let v be 8/g + (-7)/(-21). Suppose p + 3 = 4*n + 2*p, -2*p - 4 = v*n. Solve -m = n*m for m.

0

Suppose 0 = z + 3*w - 1 + 10, -5*z + 27 = -3*w. Suppose 3*x = -z*r + 15, 2*x = -3*r - 1 + 13. Solve 10 - r = 4*v for v.

2

Suppose z - 12 = -3*s, 3 + 25 = 4*z + 2*s. Let i(k) = k + 4. Let h be i(z). Solve 5*r + h = -15 for r.

-5

Suppose 3 = b - 2b. Let l be 2/b-3 + 4. Solve r + 1 = l for r.

5

Let i be (-2)/(-8) + (-63)/(-36). Suppose -2*w + 6 = -2*d, 9 = -i*d + d + 3*w. Solve d = 3*t + 10 + 5 for t.

-5

Suppose 0 = f - 6*f. Solve f = y - 2*y - 5 for y.

-5

Let h(f) be the first derivative of -f⁴⁄₄ + 2*f³⁄₃ - 4. Let x be h(2). Solve x = s + 4 - 0 for s.

-4

Let t = -10 - -13. Suppose t*q = -0*q - 5*c + 94, 0 = -3*q + 2*c + 59. Solve -8 = 5*i - q for i.

3

Let l = -8 - -13. Solve l*a = -0*a - 25 for a.

-5