Solve 5*r - 15 = 3*f + 2*f, -2*r + 10 = -3*f for r.

-1

Solve 5*t = a - 3 - 6, 4*a = -2*t + 14 for a.

4

Solve -14 = 4*t - 2*y, -243*y + 24 = -3*t - 246*y for t.

-5

Solve 5*f = -o - 9, -5*o + f = -2*f - 11 for o.

1

Solve 4*x + 13 = 12*s - 9*s, -s + 5 = -2*x for x.

-1

Solve -5*b + 25 = 3*o, 5 = b + 2*o - 5*o for b.

5

Solve 5*x + 9 = -11, -2*w + 5*x = -30 for w.

5

Solve 0 = f + 132 - 129, -k + 3 = -f for k.

0

Solve -4*w = -4*i + 6 - 2, -4 = -4*i for w.

0

Solve 4*k = 5*b - 35, 4*b = -2*k - 2 + 4 for k.

-5