Question: What is the solution?

Solve -142 = 22*t + 49*t for t.

Answer: -2

Question: What is the solution?

Solve -13*a - 2938 + 3536 = 0 for a.

Answer: 46

Question: What is the solution?

Solve 680 = -36411*d + 36547*d for d.

Answer: 5

Question: What is the solution?

Solve 0 = 305*a - 496 - 1944 for a.

Answer:
8