tolong jawab dong , sama caranya ya kak , thx

(x+4)+(3x+6)=90
4x+10. =90
4x =90-10
4x. =80
x. =80/4
x. =20

eoc=eod+doc=(2x20+8)+(20+4)
=48+24
eoc =72 derajat

L AOE = 90 -(2x + 8) = -2x + 82
L BOC + L COE + L AOE = 180
(3x +6) +(x + 4)+ (2x +8) + (-2x + 82) = 180
4x + 100 = 180
4x = 80
x = 20
L COE = (x + 4)+(2x + 8)
= (20 + 4) + (40 +8)
= 24 + 48
= 72°