KylexChaos
  • KylexChaos
Medal and Fan! What is the LCD (Least Common Denominator) of 3/10 and -4/15?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mathmale
  • mathmale
What are your two different denominators here? List them, please.
KylexChaos
  • KylexChaos
I do not know, that's why I'm asking for help...
KylexChaos
  • KylexChaos
so..

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mathmale
  • mathmale
You have two fractions. Every fraction has a denominator. I'm sure you can answer my question. Simply look at the 2 given fractions and identify the number on the bottom of each.
KylexChaos
  • KylexChaos
10 and 15, right?
mathmale
  • mathmale
yes. Now factor 10 as far as possible. What are the factors? Now factor 15 as far as poss. What are the factors of 15?
KylexChaos
  • KylexChaos
10 = 1, 2, 5,
KylexChaos
  • KylexChaos
right?
mathmale
  • mathmale
yes.
mathmale
  • mathmale
15=
KylexChaos
  • KylexChaos
Then the factor of 15 is 1,3,5
mathmale
  • mathmale
good. so you have 10=2*5 and 15=3*5. We see 5 as a factor of both. Begin writing your L:CD now. start with 5. What other factors of 10 and 15 do you see?
KylexChaos
  • KylexChaos
I don't understand, sorry.
mathmale
  • mathmale
The idea is to take all of the whole number factors of 10 and 15 and multiply them together. Both 10 and 15 have 5 as a factor, so the LCD contains 5. 10 also contains 2, so take it; multiply 5 by 2; similarly 15 contains 3, take it and multiply your 5*2 by 3. 5*2*3=?
mathmale
  • mathmale
(5)(2)(3) = ?
mathmale
  • mathmale
@KylexChaos ?
mathmale
  • mathmale
I am trying to help you understand where LCDs come from. This is an essential skill. Do you want to continue, or not?
KylexChaos
  • KylexChaos
30!
KylexChaos
  • KylexChaos
@mathmale

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