Let y be 80/30 - 2/(-6). Solve 2*a + 11 - y = 0 for a.

Let o be 2 + ²⁄₁ + -2. Suppose -j + o*j = -4*q + 6, -4*q + 4 = 0. Solve 0 = j*z - 3*z for z.

0

Suppose 0 = n + 3*n - 12. Suppose 2*l + 3*j = 30, 0*l - 30 = -2*l + 4*j. Solve n*w + 0*w = l for w.

5

Let r(d) = -d3 + 3*d2 + 6*d. Let g be r(5). Let u = -17 - g. Solve 3 = u*k - 6 for k.

3

Let n(t) = -t**2 + 6*t - 5. Let k be n(3). Solve 0*c - k = -c for c.

4

Suppose 0*a = a. Suppose -y + 0*y = a. Let o = 4 + y. Solve -o*s + 2*s - 4 = 0 for s.

-2

Suppose -15 = -d - 2*d. Suppose n = y - 3, 1 = -d*n + 16. Solve -y*z = -z - 15 for z.

3

Let x = -52 + 55. Solve -s + 4 = x for s.

1

Let j® be the second derivative of r⁴⁄₁₂ + r3 + 5*r**²⁄₂ - 5*r. Let f be j(-5). Solve -6 = -f*y + 2*y for y.

-3

Let k = 3 + -1. Suppose k*l - l = 4. Suppose 0 = -4*x - 0*x + t - l, -t + 4 = 5*x. Solve m - 2 - 2 = x for m.

4

Let s = -1 - -7. Let t = s - 3. Suppose 0 = z - t + 2. Solve -z = u + 2 for u.

-3