Suppose -x = 4*x - 20. Suppose -3*i + i - x = 0, 2*n - 4*i = 52. Suppose -3*d = -2*d + 3*c - 15, 4*c - n = -2*d. Solve 0 = -l + d*l for l.

Let d(x) = x**2 + 21*x + 23. Let n be d(-20). Solve -2*t = n*t - 15 for t.

3

Let l(d) be the third derivative of d⁵⁄₃₀ + d⁴⁄₆ - d³⁄₆ + d2. Let x be l(-3). Let p(b) = 4*b**2 - 49*b + 18. Let y be p(12). Solve 2*h + y = x*h for h.

2

Suppose 3 = -4*f + 11, -3*p + 13 = -f. Let u = p + -1. Solve u*y = 2*y for y.

0

Suppose -3*v + 23 = 2. Let k(b) = b - 9. Let i be k(7). Let p(d) = -d**2 - 4*d - 3. Let f be p(i). Solve -v = -2*u + f for u.

4

Suppose -5 = -z - 1. Solve 0 = -u - 0*u - z for u.

-4

Let b be (-1 + -11)*(-2)/6. Suppose d - 5*o = 20, b*d - o = d + 4. Solve x + d = 2 for x.

2

Let y be (5/(-15))/((-1)/21). Let s = 61 - 42. Solve 3*o + s = y for o.

-4

Suppose 0 = c + 3*y - 9 - 5, -3*c + 4*y + 3 = 0. Suppose -4*s - 5*a - 20 = 0, 5*s = 2*s - ca - 15. Let i be 2/s(-105)/7. Solve i*n - 5 = n for n.

1

Let f(j) = -j + 9. Let d(z) = 8. Suppose 0*v = -4*v - 4*i - 12, v + 3*i + 3 = 0. Let c® = v*d® + 2*f®. Let l be c(-5). Solve 4*s = 8 + l for s.

3

Suppose -16 = -r - 2*x, x - 45 = -5*r - 2*x. Let d = r + 12. Let f = -13 + d. Solve -f*y - 15 = -0*y for y.

-3