besar <cbd adalah....... jawab pakai cara.

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  • 90° = (2x + 5)° + (3x + 25)°
    90° - 5° - 25° = 2x + 3x
    60° = 5x
    60°/5 = x
    12° = x

    <CBD = 3x - 25°
    = 3 (12)° - 25°
    = 36° - 25°
    = 11°

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