Hey Ellie!

I'm not 100% sure that this is right but it looks kinda good so hopefully it helps :)

First I took the bottom right and top left angles and made an algebraic equation:

3x-15=2x+24

then I got rid of the 15.

3x-15=2x+24

+15 +15

3x=2x+39

then I needed to remove the 2x as you only want x on one side, I did this by:

3x = 2x+39

-2x -2x

x=39

then just check your answers by changing the x to 39 and solving the other equations.

and the bottom right and top left angle = 102

then the bottom left and top left angle = 78

lol I don't know if that makes sense but x = 39