Matematika

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bantu ya Pake Cara nomor 12-14 poin 27 :)
bantu ya Pake Cara nomor 12-14 poin 27 :)

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  • 14.2x+x+90 =180
    3x + 90 =180
    3x =180-90
    3x =90
    x =90:3
    x =30
    Sudut ABE =2x
    =2.30
    =60 derajat
    13.(4x+10) = 110
    4x = 110-10
    4x=100
    x=100:4
    x=25

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