Write down the solution for this math problem: Solve -192*t + 171*t - 252 = 0 for t.
answer: -12

Write down the solution for this math problem: Solve 39*j - 56*j + 112 = -24 for j.
answer: 8

Write down the solution for this math problem: Solve -168 = -9*m - 47*m for m.
answer: 3

Write down the solution for this math problem: Solve 21 - 23 = -2*d for d.
answer:
1