Another maths question: 4/5 - 3/10 div 1/2 = ?

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  • 9 months ago

    i presume you are required to solve

    the sum using paper and pencil.

    3/10/1/2=3/5

    4/5 -3/5 = 1/5

    BODMAS is the sequence operations.

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  • 9 months ago

    1).

    4/5 - (3/10 / 1/2)

    = 1/5

    2).

    (4/5 - 3/10) / 1/2

    = 1

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  • Jim
    Lv 7
    9 months ago

    4/5 - 3/10 / (1/2)

    PEMDAS (BOMDAS) do division first

    to divede, invert and multiply

    4/5 - 3/10 *(2)

    4/5 - 3/5 = 1/5

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  • DWRead
    Lv 7
    9 months ago

    You need to use parentheses for clarity.

    Do you mean 4/5 - 3/10 ÷ 1/2 ?

    Or 4/5 - 3/10 ÷ (1/2) ?

    Or (4/5 - 3/10) ÷ (1/2) ?

    Or something else?

    • Briar9 months agoReport

      The question asked has shown no parentheses but assuming parentheses is used on division 1st.

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  • 9 months ago

    I don't know what you wrote. Don't you know how to use parentheses?

    • Briar9 months agoReport

      Sorry but no parentheses was shown on the test paper question but I assume division 1st.

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  • Como
    Lv 7
    9 months ago

    Assuming that you mean :-

    4/5 - ( 3/10 / 1/2 ) = 4/5 - 3/5 = 1/5

    Just in case you mean :-

    ( 4/5 - 3/10 ) / 1/2 = (5/10) / 1/2 = 1

    PS

    You must make clear what you mean.

    • DWRead
      Lv 7
      9 months agoReport

      You have omitted some parentheses, too. The 1/2 should be (1/2).

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  • 9 months ago

    As written:

    4/5 - (3/10) / (1/2)

    Divide first, turn to multiplication of reciprocal:

    4/5 - (3/10) * 2

    4/5 - 3/5

    Then subtract:

    1/5

    ----

    If you meant for the subtraction to be done first, then you need parenthesis around them:

    (4/5 - 3/10) / (1/2)

    (8/10 - 3/10) / (1/2)

    (5/10) / (1/2)

    (1/2) / (1/2)

    (1/2) * 2

    1

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  • Brian
    Lv 7
    9 months ago

    (4/5) - (3/10) / (1/2)

    = (8/10) - (3/10) / (1/2)

    = (5/10) / (1/2)

    = (1/2) / (1/2)

    = 1

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  • 9 months ago

    pemdas

    8/10-6/10= 1/5

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