Solve 2*r - 3*j - 9 = 0, 5*r + 12*j - 9*j = 12 for r.

3

Solve -3*a = -2*m - 12, 4*a = m + 23 - 7 for m.

0

Solve -5*r = k - 5*k + 1, -2*r = 2*k - 14 for k.

4

Solve -4*v + r + 3 = -0*r, -r + 6 = 5*v for v.

1

Solve 0 = -4*o - 16, -2*f + 7*f + 2*o + 3 = 0 for f.

1

Solve 0 = -4*i, -5*i + 20 = 26*t - 30*t for t.

-5

Solve 4*y = -21*m + 24*m, -y - 4*m = -19 for y.

3

Solve 4*s - 8 = 4*y, -160 = 3*s - 2*y - 167 for s.

3

Solve -4*j = 5*x - 9*j - 10, -3*j = -5*x + 14 for x.

4

Solve 3 = -y, 3*b - 21 = -41*y + 43*y for b.

5