Jawab:
Penjelasan dengan langkah-langkah:
2x + 7x = 180°
9x = 180°
x = 180°/9
x = 20°
Besar sudut yang ditanyakan
2x = 2 x 20° = 40°
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Jawab:
Penjelasan dengan langkah-langkah:
2x + 7x = 180°
9x = 180°
x = 180°/9
x = 20°
Besar sudut yang ditanyakan
2x = 2 x 20° = 40°