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anonymous

  • 5 years ago

3/7-4/5=

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  1. anonymous
    • 5 years ago
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    You need to find a common denominator. what is something both 5 and 7 go into?

  2. anonymous
    • 5 years ago
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    they both go into 35.... Now lets start with 3/7 7(5)=35 and whatever you multiply by on the bottom you have to do to the top so 3(5) is 15 3/7 =15/35 do the same thing to 4/5

  3. anonymous
    • 5 years ago
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    5(7)=35 4(7)=28 4/5=28/35

  4. anonymous
    • 5 years ago
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    your equation should now look like this: 15/35-28/35

  5. anonymous
    • 5 years ago
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    now you just have to do simple math and subtract the top your answer should be -13/35

  6. anonymous
    • 5 years ago
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    Does that make sense?

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