Let s be ((-18)/15)/(6/(-20)). Solve -2*i - s = 4 for i.

Suppose s - 10 = 2*r, -2*s + 2*r - 7*r = -2. Solve 4*d = d - s for d.

-2

Let l be (-1 - 1) + (-5)/((-15)/9). Solve -4*t - l = 19 for t.

-5

Let a(f) = -f3 - 7*f2 - 8*f - 8. Let w be a(-6). Solve h = -w*h for h.

0

Let x(k) be the second derivative of k³⁄₆ + 15*k²⁄₂ - 5*k. Let l be x(-11). Solve l*q = 16 - 0 for q.

4

Let n = -2 - -1. Let b be 2 + ((-21)/n - 1). Solve -b + 6 = 4*a for a.

-4

Let o = 2 + 0. Suppose -6 = z + 3*v + o, -4*z - 11 = 5*v. Suppose -4*i = 4*f - 20, 0 = -i - 3*i + 5*f + 11. Solve i*d - 9 = -z for d.

2

Let y(b) = b**2 + 7*b - 8. Let z be y(-10). Suppose 5*q + 11 = -d - 0*q, -2*d + q = -z. Solve d + 3 = 4*s for s.

3

Let u be (2 - -25)*(-2)/(-6). Let v = 16 - u. Solve v*r - 2*r = 0 for r.

0

Let r(a) = 4*a. Let x be r(4). Let t be 4/x + (-22)/(-8). Solve 0 = -o + t*o + 6 for o.

-3

Let x© = -c3 - c2 - c - 1. Let v(n) = -3*n3 - 6*n2 - 2*n. Let w(f) = -v(f) + 2*x(f). Let g be w(-4). Let y = g - -4. Solve 1 = -y*k + 7 for k.

3