Let y = 10 - 13. Let w = 6 + y. Solve -w*x - 1 - 2 = 0 for x.

Let k® be the third derivative of -r⁵⁄₁₂₀ + 7*r⁴⁄₂₄ - r³⁄₆ + r2. Let a(s) be the first derivative of k(s). Let p be a(5). Solve p*d = -2 + 10 for d.

4

Suppose -2*l + 8*k = 4*k - 24, 0 = -4*l + 5*k + 33. Let d© = -c3 - 7*c2 - 7c - 1. Let b be (2 + 2 - -2)-1. Let r be d(b). Solve l*j = r*j - 3 for j.

1

Suppose -15*l = -18*l. Solve 5*m - 5 - 15 = l for m.

4

Let m = 12 - 8. Solve m*c - 5*c - 4 = 0 for c.

-4

Suppose 5*z + 19 = 5*r - 1, 0 = 5*r - 4*z - 19. Suppose -9 = -j - r. Solve 0*p - 2*p = -j for p.

3

Let v be (⁶⁄₁₂)/((-2)/(-12)). Suppose -v*k = 5*w - 69, -4*w - 5*k + 17 = -46. Solve 0 = 3*d - w - 0 for d.

4

Let b(m) = m3 - 9*m2 + 3. Let s be b(9). Suppose -p + s*q = -0*p - 10, 5*p = q + 8. Let o = 1 - p. Solve -5*y - 6 - 4 = o for y.

-2

Suppose 2*j = -0*j. Solve j*r - 6 = 3*r for r.

-2

Let i = -162 + 165. Solve -i*o - 9 = -24 for o.

5

Let d(x) = -x**2 + 10*x - 3. Let y be d(8). Solve 0 = 4*z - 29 + y for z.

4