Solve r = -y + 8, -3*r + 4*y = -0*r - 3 for r.

5

Solve -5*r + 25 = z, 3*r + 6*z - 18 + 3 = 0 for r.

5

Solve 10 = -4*k - 2*t, -20*t + 17*t = 2*k + 11 for k.

-1

Solve -u + 13 = 4*x, -10 = -4*x - 4*u + 2*u for x.

4

Solve 3*a - 1 = 2*f, 175*f + 12 = 178*f for a.

3

Solve 0 = -2*n + v - 12, v - 15 = 5*n + 12 for n.

-5

Solve d + 4*u + 21 = 0, -4 = u + 1 for d.

-1

Solve -3*a + 2*q = -1, -a - a - 21 = 3*q for a.

-3

Solve -16 = 2*j - 5*b, -j - 3*b + 6 = -2*b for j.

2

Solve 5*z + 16 = 3*j, 2*j - 3*j + 5*z + 12 = 0 for j.

2