question: Teacher asked me this: Solve -2131 - 1892 = -277*j - 1530 for j.
++++++++++
answer: 9

question: Teacher asked me this: Solve -k - 28*k - 1653 = 1629 - 2644 for k.
++++++++++
answer: -22

question: Teacher asked me this: Solve -323 + 157 = -1803*b + 1637 for b.
++++++++++
answer: 1

question: Teacher asked me this: Solve 0 = 3*a + 78*a - 729 for a.
++++++++++
answer:
9