Write down the solution for this math problem: Solve 0 = 4248*b - 2993*b - 67770 for b.
answer: 54

Write down the solution for this math problem: Solve 69*a = 62*a - 35 for a.
answer: -5

Write down the solution for this math problem: Solve 6 - 5 = d for d.
answer: 1

Write down the solution for this math problem: Solve -14*b - 97*b + 513 = 60*b for b.
answer:
3