1,000 Places to See Before You Die 2015 Page-A-Day Calendar

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Matematika Tolong ya kak pakai cara
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Tolong ya kak pakai cara
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Jawaban:

116°

Langkah-Langkah:

2x° + 3x° + 20° = 180°

5x° + 20° = 180°

5x° = 180° - 20°

5x° = 160°

x° = 32°

3 × 32 ° + 20° = 116°

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