question: Teacher asked me this: Solve 0 = 10*d - 310*d + 54*d - 156*d + 28140 for d.
++++++++++
answer: 70

question: Teacher asked me this: Solve -83182 + 93282 = -1010*j for j.
++++++++++
answer: -10

question: Teacher asked me this: Solve -5006*n - 7067*n - 43087 = -200036 for n.
++++++++++
answer: 13

question: Teacher asked me this: Solve -644*r - 30204 = 1611*r + 1625*r - 1363*r for r.
++++++++++
answer:
-12