Matematika

Pertanyaan

plz jawab buat besok -_-"
1) 1 1/2+40%-0,3:1/9=
2)1 1/2x40%+0,3:1/9=
3)1 1/2:40%-0,3x1/9=
4)1 1/2+40%x0,3:1/9=
5)1 1/2-40%:0,3x1/9=
pake cara y :D
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1 Jawaban

  • 1). 1 1/2 + 40% - (0,3 ÷ 1/9) =
    3/2 + 2/5 - (3/10 ÷ 1/9) =
    3/2 + 2/5 - (3/10 X 9/1) =
    3/2 + 2/5 - 27/10 = 15/10 + 4/10 - 27/10 = -8/10
    2). (1 1/2 X 40%) + 0,3 : 1/9 =
    (3/2 X 2/5) + 3/10 : 1/9=
    3/5 + (3/10 X 9/1) =
    3/5 + 27/10 = 6/10 + 27/10 = 33/10
    3). (1 1/2 : 40%) - 0,3 X 1/9 =
    (3/2 : 2/5) - 3/10 X 1/9 =
    (3/2 X 5/2) - 3/10 X 1/9 =
    15/4 - (3/10 X 1/9) =
    15/4 - 1/30 = 225/60 - 20/60 = 205/60
    4). 1 1/2 + (40% X 0,3) : 1/9 =
    3/2 + (2/5 X 3/10) : 1/9 =
    3/2 + (3/25 X 9/1) =
    3/2 + 27/25 = 75/50 + 54/50 = 129/50
    5). 1 1/2 - (40% : 0,3) X 1/9 =
    3/2 - (2/5 : 3/10) X 1/9 =
    3/2 - (2/5 X 10/3) X 1/9 =
    3/2 - (10/3 X 1/9) =
    3/2 - 10/27 = 81/54 - 20/54 = 101/54

    Semoga membantu :)

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