kasih cara!!!!!!!!!!!!!
⟩ $udut
.
Nilai x adalah 30°
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» Penyelesaian
2x + x + 15° + 75° = 180°
3x + 90° = 180°
3x = 180° - 90°
3x = 90°
x = 90/3
x = 30°
Jawaban:
x = 30°
Penjelasan dengan langkah-langkah:
180° = 2x + 75° + x + 15°
180° = (2x + x) + (75° + 15°)
180° = 3x + 90°
180° - 90° = 3x
90° = 3x
90°/3 = x
30° = x
