Question:
Solve -26*d + 3 = -29*d for d..

Answer:
-1

Question:
Solve -6472*n - 127*n = 549979 + 136317 for n..

Answer:
-104

Question:
Solve -2*x + 96 - 126 = -7*x for x..

Answer:
6

Question:
Solve 96*d - 66*d = -210 for d..

Answer:
-7