Question 97
small number - big number = -38
2*(small number) - 5(big number) = -217

replace "small number" with S, "big number" with B.

S -   B = -38
2S - 5B = -217.

This is a simple linear system, for which I have a <A HREF=http://www.algebra.com/algebra/homework/coordinate/>solver that shows work</A>, use it.