Write down the solution for this math problem: Solve 1198*v = 1202*v - 16 for v.
answer: 4

Write down the solution for this math problem: Solve 74*r = 65*r + 54 for r.
answer: 6

Write down the solution for this math problem: Solve -66*h - 20*h + 602 = 0 for h.
answer: 7

Write down the solution for this math problem: Solve -1359*a - 1418*a - 1798*a + 4132*a - 4430 = 0 for a.
answer:
-10