Let h = -6 - -9. Suppose 5*v = w + 3 + 21, h*v - 19 = -4*w. Suppose -4*f + 9 = w. Solve 6 = -f*k - k for k.

Let i = -87 - -91. Solve n - 15 = i*n for n.

-5

Let k = 4 + -3. Let g be 0 + 1 + 3 + k. Suppose -4*w + 10*l - g = 5*l, 0 = -5*w + 2*l - 2. Solve 2*a = -w*a + 8 for a.

4

Suppose 3*n - 6 = 9. Let i(v) = v + v - 5 + v. Let j be i(6). Solve n*w + j = 38 for w.

5

Let i(b) = b**2 + 4*b - 1. Let m be i(3). Suppose 6*z = 2*z + m. Let p = 4 + 8. Solve p = -z*t + t for t.

-3

Let a(d) = -2*d**2 + 2*d - 3. Let o be a(2). Let r be (-166)/(-18) - (-2)/(-9). Let p = r + o. Solve p*g = -2 + 12 for g.

5

Let k = -42 - -44. Solve -k = -2*i + 4 for i.

3

Let k be ((-105)/25 - -3)*40/(-6). Solve -k*v = -6*v + 4 for v.

-2

Let u(x) be the third derivative of -x⁷⁄₅₀₄₀ + x⁶⁄₇₂ + x⁵⁄₃₀ - x2. Let s(j) be the third derivative of u(j). Let o be s(9). Solve -3 - o = 4*b for b.

-1

Let t be (-15)/(-3) + (0 - 0). Suppose 4 = m + m. Suppose 6*o - o - 25 = 0, -t*o = m*p - 25. Solve p = 2*w - 5 - 1 for w.

3

Let j(k) = -k + 10. Let b be j(6). Solve -b = -0*y - y for y.

4