question: Teacher asked me this: Solve 138*n - 356 - 196 = 0 for n.
++++++++++
answer: 4

question: Teacher asked me this: Solve -961*u = -218*u - 205*u + 2152 for u.
++++++++++
answer: -4

question: Teacher asked me this: Solve 6511*h - 6504*h = -28 for h.
++++++++++
answer: -4

question: Teacher asked me this: Solve 0 = 3*j - 3 - 15 for j.
++++++++++
answer:
6