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Zale101

Add and Simplify. -11 2/3 + 7 5/8= ?

  • 11 months ago
  • 11 months ago

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  1. Zale101
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    I'm adding -11+7 ,but what do I do with the fractions?

    • 11 months ago
  2. robz8
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    find the least common denominator for 2/3 and 5/8

    • 11 months ago
  3. robz8
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    to do that, you need to find what common number are 3 and 8 multiples of

    • 11 months ago
  4. Zale101
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    Can you show me how to solve it step by step please?

    • 11 months ago
  5. robz8
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    okay, so you have -11 2/3 + 7 5/8, so you were on the right track doing 7-11 first, but remember that 2/3 is actually negative since it is part of -11 2/3... so 7-11 is -4... and you need to add -2/3 + 5/8 so to add -2/3 and 5/8 you need to find the fractions least common denominator (LCD) looking at the denominators 3 and 8, we can see that 24 is the smallest number that 3 and 8 are both factors of. so -2/3 == -16/24, and 5/8 == 15/24. now just add -16/24 and 15/24 which == -1/24 and to finish it, add -1/24 to -4 and we get -4 1/2

    • 11 months ago
  6. robz8
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    sorry, -4 1/24 is the answer

    • 11 months ago
  7. Zale101
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    Ok, so i have to subtract 7-11(it's subtract because 11 is negative) to get -4 and 2/3+5/8. So it deals with fractions then, thanks. I know how to solve fractions, i just wanted to make sure. Thanks again.

    • 11 months ago
  8. robz8
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    make sure that you keep 2/3 NEGATIVE when you add -2/3 + 5/8

    • 11 months ago
  9. Zale101
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    yes, Thanks

    • 11 months ago
  10. robz8
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    yw

    • 11 months ago
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