Solve 5*i = 5*z - 50, i + 15 = 9*z - 7*z for z.

5

Solve -5*i + 15 = 2*j - 0*j, 0 = -5*i + j + 30 for i.

5

Solve -4*n + 40 = 5*u, 5*n + 13 - 50 = -3*u for n.

5

Solve -3*v = -0 + 9, 3 = 3*g + v for g.

2

Solve 0*y + 2*t + 11 = 5*y, 9 = 5*y - 3*t for y.

3

Solve f - 25 = 4*v, 4*f - 2*f + 5*v + 15 = 0 for f.

5

Solve 3*f - 1 = 2*v, -5*f + v + 1 = -4*f for f.

-1

Solve 11 = -3*k - s - 0, 2*s = -10 for k.

-2

Solve -3*u + 22 = 4*f, 2*u - 3*f + 14 - 6 = 0 for u.

2

Solve -4*g - a + 3 = -2*a, -4*a = 4*g - 28 for g.

2