Will give briniest and like it Three lines intersect at a common point. In the figure below, m∠1=x°, m∠2=2x°, and m∠3=75°.
Which equations can be used to determine the value of x? Select all that apply.
Pls help

A:3x°=75°

B:3x°=105°

C:3x°=255°

D:3x°+75°=180°

E:x°+2x°+75°=180°

F:x°+2x°+3x°=360