Write down the solution for this math problem: Solve 3598 = 153*n - 1910 for n.
answer: 36

Write down the solution for this math problem: Solve -17*i + 20 = 7*i - 124 for i.
answer: 6

Write down the solution for this math problem: Solve -101*t = 121 - 20 for t.
answer: -1

Write down the solution for this math problem: Solve 2220 - 2240 = 10*a for a.
answer:
-2