Solve -56 = 4*x + 4*s, -243*x - 3*s - 22 = 247*x - 491*x for x.

-5

Solve 2*k - 5*l = -80, 4*k - 71 + 37 = 2*l - 66 for k.

0

Solve 15*i + 13*i = -5*u + 33*i - 40, 11*u + 5*i = -40 for u.

-5

Solve -135 = 11*m - 4*s + 30, 60 = -4*m - 3*s for m.

-15

Solve -601*m + 4*b = -604*m + 12, -m = -6*b + 40 for m.

-4

Solve -398*f + 393*f - 3 = -3*c, 0 = 2*f - c for f.

3

Solve 35*o + 3*n - 88 = 31*o, 16*o - 3*n = 287 + 65 for o.

22

Solve 3*a - 2*a = i + 9, -3*i - 1149 = -1146 for a.

8

Solve -2*l + 4*h + 30 = 0, 5*l + 4*l - 6*l = 5*h + 36 for l.

-3

Solve -8*u + 3*q = 2*q - 221 + 138, 0 = -5*q - 15 for u.

10