Answer:
Everything except g=180-53.
Explanation:
ACF=ECB because the are vertical angles (they are opposing each other). So if ECB is g° then ACF is also g°. Think of them as symmetrical.
53+g=90 because 90-53=g and 90-g=53. (I don't know how to explain it other than this)
g+53+90=180 because ACB is a straight line (straight lines are always 180 degrees) and g, 53, 90 all make up the straight line.
90-g=53 because 53+g=90 and 90-53=g. (I don't know how to explain it other than this)
ACD=DCB because they are both right angles.