Question:
Solve 222*w = 58*w - 1640 for w..

Answer:
-10

Question:
Solve 2739*r = 7552*r - 481300 for r..

Answer:
100

Question:
Solve 13*i - 362 + 531 = 0 for i..

Answer:
-13

Question:
Solve -155 + 145 = -5*g for g..

Answer:
2