Question:
Solve 0 = 70*x + 67 + 283 for x..

Answer:
-5

Question:
Solve -270*p - 9 = 11 - 20 for p..

Answer:
0

Question:
Solve 4*k = 34*k + 23*k + 795 for k..

Answer:
-15

Question:
Solve 30*z = 28*z + 10 for z..

Answer:
5