Question:
Solve 0 = 278326*m - 278303*m - 529 for m..

Answer:
23

Question:
Solve 0 = 4*w + 2*w for w..

Answer:
0

Question:
Solve -109*q - 279 = -140*q for q..

Answer:
9

Question:
Solve 0*r - r = 7 for r..

Answer:
-7