Matematika

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no.23 tolongg bantuu bsk us mtk soalnyaa:(
no.23 tolongg bantuu bsk us mtk soalnyaa:(

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  • 180° = 80° + 2a + PRQ
    180° = 6a + PRQ

    80° + 2a + PRQ = 6a + PRQ
    80° = 4a
    20° = a

    PRQ = 180° - 6a
    PRQ = 180° - 6(20°)
    PRQ = 180° - 120°
    PRQ = 60°

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