Question: What is the solution?

Solve 20 = -10*y - 18*y - 8 for y.

Answer: -1

Question: What is the solution?

Solve -10*a + 72 = -22*a for a.

Answer: -6

Question: What is the solution?

Solve 49*t = -8*t + 2*t + 715 for t.

Answer: 13

Question: What is the solution?

Solve 3*f + 15 = 6*f for f.

Answer:
5