Question:
Solve -215*j + 2653 = -1689 + 472 for j..

Answer:
18

Question:
Solve 25*l - 270 = -570 for l..

Answer:
-12

Question:
Solve 0 = -q - 26*q - 216 for q..

Answer:
-8

Question:
Solve -2711 = 61*k + 144*k - 1769 + 2338 for k..

Answer:
-16