Let o = -31 - -42. Solve -4*u = 5 + o for u.

Let d be (20/(-6))/(¹⁄₉). Let s be 5/d + (-19)/(-6). Let i = 1 + 11. Solve r = -s*r - i for r.

-3

Suppose 147 = 3*m + 36. Suppose -m = 5*u + 8. Let y = -9 - u. Solve -4*n + y*n = -4 for n.

1

Let y be ⁷⁄₃ + ²⁄₁₂*-2. Solve -y*v = 2*v for v.

0

Suppose 0 = -q + 3*r + 19 - 7, 0 = 2*q + 4r + 16. Let b be (q - 2 - -1)-3. Solve -b*j - 2 = -2*j for j.

-2

Let l = 31 - 29. Let q® = r**2 + r - 2. Let v = -3 + 1. Let g be q(v). Solve l = i - g*i for i.

2

Let n = -9 + 20. Let a = n - 7. Solve 4*x - 4 = a for x.

2

Suppose -2*d = 2, 9 = 5*j - 2*d - 8. Suppose -j*p - 10 + 40 = 0. Solve 5*i - p = 15 for i.

5

Suppose 3*p - 6 - 6 = 0. Solve p*i + 4 = 20 for i.

4

Let u be 1*(⁴⁄₈*0)/(-2). Solve u = -6*r + 2*r for r.

0

Let o(u) be the second derivative of u⁵⁄₁₂₀ + 7*u⁴⁄₂₄ - u**³⁄₆ - 3*u. Let t® be the second derivative of o®. Let j be t(-6). Solve -v + 2 = -j for v.

3