Suppose 4*g - 4*l = 4, 2*g + 0*l = l + 5. Suppose 5*k = 5*a + 4*k - 12, -4*a - 5*k + 27 = 0. Solve 0 = -g*u + a*u, 4*r = -4*u for r.

0

Let l = 7 - 3. Let i(t) = 4 - t - 3 + 5 + 13. Let c be i(l). Solve -6 + 0 = 2*w - b, -5*b = -5*w - c for w.

-3

Suppose 5*k = -h + 28, 6*h - k = 8*h - 29. Solve -16*a + h = 5*u - 15*a, -4*u - 5*a = -23 for u.

2

Let x = 18 - 13. Suppose -4*l - 5*v - 24 = -v, -5*l - 30 = -2*v. Let n be 2/(-3 - 21/l). Solve -x*i = 15, -n*b = -5*i + i - 32 for b.

5

Let u(f) be the second derivative of -2*f3⁄3 + 45*f2 - 25*f + 2. Let t be u(21). Solve 0 = 4*i, 20 = -r + t*r - 5*i for r.

4

Suppose 58*q = 719 + 1427. Solve o + 6 = -2*m - 1, 4*o - 5*m - q = 0 for o.

3

Suppose 4*z - 52 = 4*m, -47 = -z - 3*z + 3*m. Suppose u + 3*l = 4 + 10, 0 = -2*u + 3*l - z. Solve 0*d + u*d + 8 = 2*f, -f = d - 6 for f.

5

Let y(s) = -26 + 78 - s**2 - 171*s + 173*s. Let k be y(8). Solve 0 = 4*g + k*d, -g - 2*d = -4*d - 9 for g.

3

Let m© = 3*c**2 - 9*c - 1. Let v be m(7). Let o = v - 54. Let a = o + -27. Solve 3*q - a*q = -b - 8, 3*q + 16 = -b for b.

-4

Suppose -2*h - 2*h - 3*i = -50, 5*h = -3*i + 61. Suppose 5*j - 14 = h. Suppose 0 = -b + j - 3. Solve 0 = -2*y + 2*n - b, -3*y - n + 6 + 3 = 0 for y.

2