Suppose 20 = -i - 3*s + 8*s, -4*s + 16 = -2*i. Solve -4*t + 15 + 5 = i for t.

Suppose -4*v - 10 = -30. Let j(h) = -h**2 + 4*h + 5. Let u be j(v). Solve -4*o - 6 - 2 = u for o.

-2

Let z(h) = 11*h - 42. Let x be z(4). Solve 0 = o - x + 4 for o.

-2

Let d© = 2*c**2 + 13*c - 2. Let s be d(-7). Suppose -5*y = -4*v + 4 - 29, v + 5*y = 0. Let t = v + s. Solve -3*i + 7*i = t for i.

0

Let j = 5 - 6. Let v be (-3 + -1)*j/2. Solve 0 = -3*k + v - 5 for k.

-1

Let b be (-21)/(-6) + 6/(-4). Suppose -b*z = -5*z + 6. Suppose -z*k + 3*o = k - 21, -17 = -k + 3*o. Solve 3*i = -k*i + 20 for i.

4

Suppose 2*l - 6*l + 2*x = 0, x - 10 = -3*l. Solve 4*z = l*z - 6 for z.

-3

Let s(d) = d3 + 5*d2 + 2*d - 5. Let k be s(-4). Suppose -k = 4*l - 3*h, -6*l - 4*h = -l - 35. Suppose -4*w + 45 = 5. Solve -u + l*u = -w for u.

-5

Let p(f) = -f3 - 2*f2 + f - 1. Let c be p(-3). Suppose -4*z - 5 = -c*l - 25, -4*z = -l - 4. Solve -k - 4 = -z*k for k.

-4

Let t(k) = -k3 - k2 - k - 6. Let m be t(-2). Solve -c + 4 - 1 = m for c.

3

Let o be 5/(¹⁵⁄₄₂) - 0. Let l = 20 - o. Let j = l - 3. Solve 4 = 2*m - j*m for m.

-4