Solve -5*a + 40 = -5*s, 5*a - 2*a - 20 = 2*s for s.

-4

Solve 5*t + 9*i = 8*i + 23, -5*i = -5*t + 5 for t.

4

Solve -5*n - 5 = 2*r + 7, r - 6*n - 28 = 0 for r.

4

Solve -10*w - 2*c - 4 = -7*w, 0 = -4*c - 8 for w.

0

Solve 27 = 3*i + 3*d, 6*i - 31 = 3*i - 4*d for i.

5

Solve 0 = 3*y + 12, -2*w - 26 = -0*y + 4*y for w.

-5

Solve -1 = -5*l + 3*g, -22*l + 17*l - 3*g = -19 for l.

2

Solve -3*d + 2*r = -7, -5*r + 3 + 17 = 0 for d.

5

Solve -2*l = -5*y - 25, -4*l - 9 + 32 = -y for l.

5

Solve -4*k + 11 = 33*r - 38*r, 2*k + 5*r = 13 for k.

4