Matematika

Pertanyaan

1.4X...=16X1/2
2. 2X...=36:3
3.(1/2X...) = 25X17
4. (10:1/2)X...=120
5. (1/5...) =10=5X4
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Bagaimana caranya?

1 Jawaban

  • Jawaban:
    1.4 × a=16 × 1/2.
    =16 × 1/2.
    =8.
    a=8 : 4.
    a=2.
    2.2 × m=36 : 3.
    =36 : 3.
    =12.
    m=12 : 2.
    m=6.
    3.(1/2 × b)=25 × 17.
    =25 × 17.
    =425.
    b=425 × 2.
    b=850.
    4.(10 : 1/2) × n=120.
    =(10 × 2) × n=120.
    =20 × n=120.
    n=120 : 20.
    n=6.
    5.(1/5 × y) - 10=5 × 4.
    =5 × 4.
    =20.
    y=(20 + 10) × 5.
    y=30 × 5.
    y=150.

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