besar CED adalah minta tolong ya

180=4x+4+3x+8+5x
180=12x+12
180-12=12x
168=12x
168/12=x
14=x

Besar CED=3x+8
=3(14)+8
=42+8
=50

Jawab nya yg a.50

AEC = 4x + 4°
CED = 3x + 8°
BED = 5x

Ditanya sudut CED

jawaban :

➡Sudut garis lurus = 180°

Maka :

AEC + CED + BED = 180°
(4x + 4°) + (3x + 8°) + (5x) = 180°

12x + 12° = 180
12x = 180° - 12°
12x = 168°
x = 168/12
x = 14°


Maka sudut CED :
= 3x + 8°
= 3(14°) + 8°
= 42 + 8
= 50°

Jawaban A ✔