Q: Solve -77 + 74 = 3*v for v.

A: -1

Q: Solve 2692*a - 2050*a - 18379 = -5040*a + 61169 for a.

A: 14

Q: Solve 70555 + 70349 = 1306*r + 398*r - 336*r for r.

A: 103

Q: Solve -154343 - 372518 = 5638*z - 232991 + 416518 for z.

A:
-126