Solve 20*r + 13 = 15*r - u, 5*r - 3*u = -1 for r.

-2

Solve 2*i + 8 = -3*n, 34*i = -5*n + 31*i - 12 for n.

0

Solve -4*d - 2 - 2 = 0, 2*r + 5 = -5*d for r.

0

Solve -38*q + 36*q = 4*w + 6, -5*w = -5*q for w.

-1

Solve -5*n = -3*t + 22, n + 0*n + 8 = -3*t for n.

-5

Solve 5 = -5*r, -5*v + 27 = -2*r - 0 for v.

5

Solve 50*d = 2*l + 48*d - 12, 3*l - 14 = -d for l.

5

Solve 0 = -5*f + 4*t - 3*t + 12, -t = 5*f - 18 for f.

3

Solve 3*q = -5*x + 4, -3*q - 3*x + 4 = -2 for q.

3

Solve 4*n + 0*m - 30 = -5*m, n - m = 3 for n.

5