Matematika Sekolah Menengah Pertama mohon di jwb ya. soalny mau dikirimsya minta tolong ya​

jeffryratkeulv – April 10, 2023

mohon di jwb ya. soalny mau dikirim
sya minta tolong ya​

Jawaban:

(5x-1)+6x + 4x+1 = 180°

15 x = 180

x = 12

ACB = 5(12)-1 = 59°

CAB = 6(12) = 72°

CBA = 4(12)+1 = 49°

CBD= 180-CBA

= 180-49 = 131°

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