Let n = -9 - -20. Solve -n - 9 = 4*r for r.

Let c(b) = -1 + 5*b - 4*b + 2*b2 + 5*b2. Let i be c(1). Solve 4*m - i*m = 15 for m.

-5

Let n(j) = 10*j - 25. Let i be n(3). Suppose 0 = 2*x - 2*f - 44, -2*x + 37 - 8 = 3*f. Suppose 0 = -3*y - 2*h + i + 6, 5*y - x = -4*h. Solve m = -y*m + 12 for m.

3

Let v be (2 - 2) + -9 + 11. Let r(l) = -3*l - 9. Let f be r(-7). Solve -b - f = v*b for b.

-4

Suppose 16*v - 10*v = 0. Solve v = -6*g + 5*g - 4 for g.

-4

Suppose -u - 3 = 3*g, 5*u - 4*g = 27 - 4. Suppose 4*d - f - 16 + 7 = 0, u = -3*f. Solve 2*r - 12 = -d*r for r.

3

Suppose -28 = 4*j - 5*j. Solve -5*r + 3 = j for r.

-5

Let m = 1 - -3. Suppose -3*x + x = 2*a, 3*a + x - 10 = 0. Solve -i = m*i - a for i.

1

Let r(f) = -f3 + 8*f2 + 12*f - 25. Let b be r(9). Solve 0 = 3*z + 10 + b for z.

-4

Suppose -2*z - 9 = 2*z + 5*n, -n + 11 = 4*z. Suppose -2*m + z = -m. Let h = 2 - -1. Solve -h*i - 2 = m for i.

-2

Suppose -5 = -4*a + 5*t, 3*t + 4 = -2*a + 1. Let l = a + 2. Suppose -l*z + 6 = z. Solve -b - b = z for b.

-1