Write down the solution for this math problem: Solve -389 = 122*r - 15*r - 1780 for r.
answer: 13

Write down the solution for this math problem: Solve 31*l + 216 = 103*l for l.
answer: 3

Write down the solution for this math problem: Solve -2034*y = -1930*y + 2496 for y.
answer: -24

Write down the solution for this math problem: Solve -1039*j - 21684 - 55412 = -254*j - 3306 for j.
answer:
-94