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8x-4x=51+13
4x=64
x=64/4 =16
sudut abc = 180°-sudut cbk
= 180-(4×16+51)
= 180-115
= 65°
JAWABAN
8x -4x=51+13
4x =64
x=64/4=16
sudut <ABC=180°- sudut <CDK=180°-(4x16+51)
=180°-115
=65°
maaf kalau salah♡