Question: What is the solution?

Solve -64*r - 10688 = -398*r for r.

Answer: 32

Question: What is the solution?

Solve 190*j - 46*j - 62*j = 54*j - 84 for j.

Answer: -3

Question: What is the solution?

Solve 67909 = 13*w + 67948 for w.

Answer: -3

Question: What is the solution?

Solve 36*w + 25*w = 8*w + 1325 for w.

Answer:
25