Q: What is the solution?
Solve -831*a = -1304*a + 7568 for a.

A: 16

Q: What is the solution?
Solve 14099*r - 37565 = 65822 + 37603 for r.

A: 10

Q: What is the solution?
Solve -289 = -2684*v + 2707*v + 79 for v.

A:
-16