Solve 0 = -10*r + 5*r - 15, -2*t + 5 = -r for t.

1

Solve 2*j + 5*a + 2 = 0, 0 = 9*j - 11*j + 3*a - 2 for j.

-1

Solve y = -x + 5*y + 13, 3*x = -y - 13 for x.

-3

Solve 0*m = 3*l - 2*m + 11, 2*m - 2 = 0 for l.

-3

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

0

Solve -2*t = -3*c - 9, -4*t + 2*t - 4*c = 12 for t.

0

Solve -8 = -2*i + 2*v, 3*i + 4*v + v = 4 for i.

3

Solve 0 = -3*w - 6, 7*m + 5*w + 12 = 5*m for m.

-1

Solve 2*m - 2*f + 21 = -7*f, 25 = -5*f for m.

2

Solve 10*u = 7*u + 3*z - 24, u + z + 4 = 0 for u.

-6