Suppose r - 23 = -5*s + 2*r, 2*s - 2 = 4*r. Solve -s*w - 9 = -2*w for w.

-3

Let s be 1/(-1 + (-7)/(-6)). Suppose -f = -r + 5, 0 = 3*f - 2*f - 5*r + 25. Solve f = -4*w + w - s for w.

-2

Suppose -4*d - 72 = -7*d. Let y = 6 + -10. Let r be ((-2)/6)/(y/d). Solve -k = r*k for k.

0

Let k(f) be the second derivative of f3⁄6 + f2⁄2 - 2*f. Let g be k(4). Suppose g*d - 2*a = 60, d - 35 = -a + 6*a. Solve 4*s + d = 2*s for s.

-5

Let k(n) = -n3 + 5*n2 + 5*n + 6. Let l be k(6). Let t be 4/(-20) - 3/(-15). Suppose t*z = 5*z - 20. Solve l*o + z*o = 0 for o.

0

Suppose 3 = 4*k - 5. Solve 2*g + k = 8 for g.

3

Let i = -27 + 69. Suppose -g - 3*x + 3 = 0, 5*g - 3*x - x = -i. Let n© = c3 + 7*c2 + 4*c - 7. Let w be n(g). Solve -5*y + 10 = -w for y.

3

Let g = -125 - -127. Solve 0*w - 8 = g*w for w.

-4

Suppose 68 = -0*z - 4*z. Let x = -15 - z. Solve 0*c - x*c = 0 for c.

0

Suppose a = -a + 8. Solve -2*c + a*c = -4 for c.

-2