Matematika

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tolong di bantu ya no 9 & 10.pake cara ya
tolong di bantu ya no 9 & 10.pake cara ya

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  • 9. EF = (3x7) + (13x3) / 10
    = 21+39 / 10
    = 60/10
    = 6

    10. 5/7 = 6/(6+y)
    30+5y = 42
    5y = 12
    y = 2,5

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