Suppose 20 - 30 = -2*r. Solve 3*f + 7 = -r for f.

Let v be (²⁄₃)/(²⁴⁄₁₀₈). Solve -2*y - 20 = v*y for y.

-4

Let s(b) = -b - 11. Let a be s(-12). Let h be ((-1)/(-3))/(a/12). Solve h = -2*j + 3*j for j.

4

Let o = 25 - 20. Let x be ((-10)/(-4))/(²⁄₁₆). Solve 5*p = o + x for p.

5

Let y(d) = -d3 + 7*d2 - 5*d - 5. Let l be y(5). Solve -3*j - j = l for j.

-5

Let i(s) = 9*s - 18. Let v be i(5). Solve -5*a + v - 2 = 0 for a.

5

Let u(v) = v**2 + 3*v - 11. Let g be u(-6). Solve 4 = -g*w + 3*w for w.

-1

Suppose 9*c - 50 = 4*c. Let s(n) = n3 - 10*n2 + 5. Let l be s©. Solve -4*y + l*y + 1 = 0 for y.

-1

Suppose 2*y - 6*y = 0. Solve y*d + 3*d = 0 for d.

0

Let j = 72 + -62. Solve 0 = 3*w + 5 + j for w.

-5

Suppose o + 23 = n, 0 = -4*n - 0*n + 3*o + 87. Suppose -5*k + n = -57. Solve k = -0*s + 3*s for s.

5