Answer:
Expression 1: 3y+x+52+(2x-60)+(x+15)+52=360
Expression 2: 4x+3y+59=360 or if you want just "x"'s and "y"'s on one side, you would do 4x+3y=301
Explanation:
Expression 1: Add up all the angles to get expression 1.
Expression 2: Combine like terms.
Hope this helps! :)