Q: Solve -4 - 108 = 28*j for j.

A: -4

Q: Solve -621 + 181 = 55*x for x.

A: -8

Q: Solve 1010*a + 1305*a - 89075 = -617*a + 387*a for a.

A: 35

Q: Solve 710*d + 38 = 706*d + 14 for d.

A:
-6