Suppose r + 3*r - 2*h = -106, -4*h + 140 = -5*r. Let x be (2 + -1)/(3/r). Let v = -4 - x. Solve 0 = v*n - 12 for n.

3

Suppose c - 4*c + 2*f + 5 = 0, -4*c - 3*f + 35 = 0. Let w(m) = m3 - 4*m2 - 4*m - 5. Let g be w(5). Suppose g*u + c = u. Solve 0 = 3*b + 7 + u for b.

-4

Let k(f) = -f - 8. Let x be k(-8). Suppose 5*q + 7 - 27 = x. Let p be q/(-6) + (-26)/(-3). Solve 2*o + 0*o = p for o.

4

Suppose 5*k + 1 = -2*b + 10*k, -2*b - 4*k + 8 = 0. Solve b*w = w for w.

0

Suppose -z = 4*z - 20. Suppose -h - z*h = 2*b - 4, h = -3*b + 32. Solve 5*t + b = 2 for t.

-2

Let w be (2 - 12⁄8)*16. Suppose 4*y - w = -0*y. Solve -4 = -4*h + y*h for h.

2

Suppose 0 = -9*k + 8*k + 4. Solve 5*d - k*d = 4 for d.

4

Let b(l) = -l - 3. Let w(p) = 1. Let n© = b© + 2*w©. Let v be n(-1). Solve 15 = 5*o - v*o for o.

3

Suppose i - 2 = -1. Let n be 0 + (-2 - i) + 19. Solve -n = -0*a - 4*a for a.

4

Suppose -2*s - s = 0. Suppose -j = 4*u - 10, 4*j + 8 = -s*j. Solve u = d - 0 for d.

3