Matematika

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tolong d jwb y ... secepat mungkin
tolong d jwb y ... secepat mungkin

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  • 3.
    2x + 10 = 70
    2x = 60
    x = 60/2 = 30°

    4.
    3x + 60 = 180
    3x = 120
    x = 120/3 = 40°

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