Jawab:
Penjelasan dengan langkah-langkah:
Total sudut lurus = 180 derajat
78° + y + 3y + 2y = 180°
(1+3+2)y = 180° - 78°
6y = 102°
y = 102°/6
y = 17°
Jawabannya (B)
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Jawab:
Penjelasan dengan langkah-langkah:
Total sudut lurus = 180 derajat
78° + y + 3y + 2y = 180°
(1+3+2)y = 180° - 78°
6y = 102°
y = 102°/6
y = 17°
Jawabannya (B)