Let u be 1/((-15)/20)*-3. Solve -u*r + 3*r = -5 for r.

5

Suppose -4*g + 8 + 14 = t, -4*g + 2*t + 16 = 0. Suppose -g = v - 5*f, 5*v - f - 16 - 7 = 0. Solve -v*l = -2*l for l.

0

Let w = 30 - 15. Suppose 4*q - 6*q + 4 = 0. Solve -q*r + w = 3*r for r.

3

Let m be 18⁄12*(-4)/(-3). Let l = m + 3. Solve 0 = l*u - u for u.

0

Suppose 0*v + 3*s = v - 11, -v + 4*s + 12 = 0. Suppose 6 = n + d, 4*n - 3*d + 3 + 1 = 0. Let w be n/(-3) - 8/(-3). Solve -2*k = w*k - v for k.

2

Suppose 11*i = 10*i. Solve -4*j + 7*j + 3 = i for j.

-1

Let j(z) = -z**2 - 7*z + 8. Let k be j(-8). Let v = 3 + k. Solve -c - 4 = -v for c.

-1

Let m be 0/(1 - (1 - 1)). Let h = -9 + 9. Let w(p) = 2*p + 2. Let r be w(h). Solve -r = -m*i - i for i.

2

Let q = 41 - 31. Solve q = 3*z + 2*z for z.

2

Let x be 0/(-9 - -4 - -3). Solve y - 1 - 1 = x for y.

2