Suppose -2*z + 3*c = -7, 2*z - 1 = c - 4*c. Solve -z*i - 15 = 3*i for i.

Let k be 72/(-90)*15/(-2). Solve f + f = k for f.

3

Let u(n) = n - 5. Let x be u(5). Suppose -2*l - v = -6 - 4, x = -5*v. Solve -a = -0 + l for a.

-5

Let h = 49 - 47. Let b be (-67)/(-4) + (-5)/(-20). Let f be b + 0 - ⁶⁄₃. Solve -h*c = c + f for c.

-5

Suppose -7*k - 15 = -10*k. Solve k*o = o - 16 for o.

-4

Suppose -a + 2*f = -1, 4 = 4*a - 3*a + f. Suppose a*r = r + 4. Solve -b + 3 = -r*b for b.

-3

Let q = 46 + -27. Suppose 0 = -2*o - q + 59. Solve -4*y - o = -0*y for y.

-5

Let s(f) = f**2 - 6*f + 13. Let m be s(4). Solve 3 = 2*q - m for q.

4

Let i© = -c3 + c2 + 1. Let t be i(1). Let m be 5 + (t + 0)/(-1). Let f be (-2)/m*(5 + -5). Solve -l = -f*l - 2 for l.

2

Let c(i) = 2*i - 1. Let k be c(3). Solve -4 = k*t + 6 for t.

-2

Suppose m = 3*m - 10. Suppose z + f + 2 = 4*z, 4*z = m*f + 10. Solve z = -4*k + 3 + 13 for k.

4