Write down the solution for this math problem: Solve 3*d + 1584 = 1578 for d.
answer: -2

Write down the solution for this math problem: Solve 372 = -97*o + 2*o - 2232 - 1956 for o.
answer: -48

Write down the solution for this math problem: Solve 3*o = 7*o + 12 for o.
answer: -3

Write down the solution for this math problem: Solve 6464*v - 196*v + 3105*v = 149968 for v.
answer:
16