1. The problem statement, all variables and given/known data No official problem, just a study guide fill-in-the-blanks with an extended simplification blank. Basically, no values were given, and it is a standard block on a standard slope with a north-east applied force pushing down on the block (not parallel to horizontal or vertical axis). 2. Relevant equations Fnet = ma Fnormal = Fay + Fgy Fnormal = (Fapplied)(sinØ) + (Fgravity)(cosØ) Fnet = Fax - Fgx - Ffk Fnet = (Fapplied)(cosØ) - (Fgravity)(sinØ) - (Uk)(Fnormal) 3. The attempt at a solution He asked us to substitute the second equation above into the third equation above. I am terrible at simplifying and so this is as far as I've gotten: ma = (Fapplied)(cosØ) - (Fgravity)(sinØ) -Uk(Fapplied)(sinØ) + (Fgravity)(cosØ) This is extremely messy and confusing, I am aware, so I am in deep gratitude to anyone taking time to help a scrub physics student like me. :D Thank you so much for any simplifying advice! I am solving for acceleration.