Struggling to Understand Forces and Acceleration

[JJones_86]

Homework Statement

Hey guys, need a little help. Can someone point me in the right direction for this question? I just need to know where to start.

Two forces FA and FB are applied to an object whose mass is 8.27 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 0.57 m/s2. However, when FA points due east and FB points due west, the acceleration is 0.35 m/s2, due east.
(a) Find the magnitude of FA
(b) Find the magnitude of FB

Homework Equations

Don't know where to begin

The Attempt at a Solution

 

[JJones_86]

Nevermind, I figured it out.