Question

If (a,b) is a solution to the system of equations
* pi(x)+(pi+e)y=pi+2e
* (pi+3e)x+(pi+4e)y=pi+5e'
What is b-a?

Answer 1

Have you solved the equations for x and y?

Answer 2

If you use an only program, you can find the values of x and y.

(x,y) --> (a , b)

b - a = (y) -( x )

http://www.wolframalpha.com/input/?i=pi%28x%29%2B%28pi%2Be%29y%3Dpi%2B2e%2C++%28pi%2B3e%29x%2B%28pi%2B4e%29y%3Dpi%2B5e

@daniel.ohearn1