Q: What is the solution?
Solve 0 = -13721*y + 13686*y + 1400 for y.

A: 40

Q: What is the solution?
Solve 72845 = 1376*d + 2312*d - 104179 for d.

A: 48

Q: What is the solution?
Solve -68*r + 243*r - 1925 = 0 for r.

A:
11