Let r be 4/14 + (-15)/(-21). Let h = r + 2. Suppose -4*y = -4 - 4. Solve -h*x = -y*x for x.

Let s = -11 + 14. Solve 8 = s*o - 7 for o.

5

Suppose -2*u - 18 = -3*n, 5*n - 11 = 3*n + u. Let i(q) = -q - 1. Let h be i(n). Let a = h - -7. Solve a = s - 0 for s.

2

Suppose 21 = p + 2*p. Let z(a) = a3 - 6*a2 - 4*a + 9. Let h be z(p). Suppose 3*d - 78 = 4*b, d = -4*b + h - 4. Solve 5*f + 1 = d for f.

5

Let y be (-8)/10*(70/(-4))/7. Solve y*w = -2 - 2 for w.

-2

Let v = 8 - 6. Solve -4*h - 6 = -v*h for h.

-3

Suppose -y + 4 + 4 = 2*n, 0 = 4*n + 5*y - 28. Let f(p) = p3 + 5*p2 + 3*p - 2. Let g be f(-3). Solve l + g = n for l.

-5

Let y® = -5 - r**2 + 2 - 3*r + 1. Let w be y(-2). Suppose w = 5*o + s - 4 - 5, 5*o + 3*s - 7 = 0. Solve 6 = o*l - 0*l for l.

3

Let v be (-6)/2 - -6 - 29. Let i = -18 - v. Solve i*l = 3*l - 15 for l.

-3

Let s(z) be the second derivative of z³⁄₃ - 3*z²⁄₂ + 3*z. Let y be s(3). Solve f + y = -1 for f.

-4

Let o be (-4 + 6)*¹⁸⁄₄. Solve 2*w + o = -w for w.

-3