anonymous
  • anonymous
I Will Medal And Fan Best Answer! I need explanation AND answer! Add. 3/4 + 3/10 Write your answer as a fraction in simplest form.
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!
anonymous
  • anonymous
21
anonymous
  • anonymous
21?
anonymous
  • anonymous
just kidding im just messing around

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anonymous
  • anonymous
-_-
ccswims
  • ccswims
you must find the common denominator between 10 and 4
anonymous
  • anonymous
i know what to do, just not good at knowing how
ccswims
  • ccswims
ok, the common denominator is 20, because 10 can go into 20, and 4 can go into 20
ccswims
  • ccswims
but you cant just leave it as 3/20. for 3/4 you multiplied 5*4 to get 20. so now you must multiply 3*5 also
ccswims
  • ccswims
what you do to the denominator you must ALWAYS do to the numerator
ccswims
  • ccswims
so now you have 15/20, correct? because 3/5 = 15 and 4/5 = 20
anonymous
  • anonymous
i don't get that last part
ccswims
  • ccswims
now you must do the same to 3/10, except this time you multiplied it by two because 10*2 = 20. so now, instead of multiplying 3*5, you are going to multiply 3*2
ccswims
  • ccswims
ok, so you need help more on the last part? ok, so when you go to find the common denominator, you have to multiply the same number you multiplied on the bottom, to the top.
ccswims
  • ccswims
so, for example, if i wanted the common denominator to be 10, and we had the fraction 2/5, you would multiply 5*2 to get 10 right?
ccswims
  • ccswims
well, you must also multiply 2 to the numerator (2*2) because you did that to the denominator
ccswims
  • ccswims
get it?
ccswims
  • ccswims
so basically, whatever you do to the bottom you must also do to the top.
ccswims
  • ccswims
ok, so now do what we did with 3/4 (and remember we got 15/20) now do it with 3/10
anonymous
  • anonymous
i don't get most of that........
anonymous
  • anonymous
Sorry, i'm stupid
ccswims
  • ccswims
your not stupid, this certain part just may not be your strong suit, for instance my weak part in math is angle proofs and parabolas and postulates. you'll get it tho. tell me where you exactly start to drop. where exactly do you not understand?
anonymous
  • anonymous
I don't understand MOST math. This is when i lost: so now you have 15/20, correct? because 3/5 = 15 and 4/5 = 20
ccswims
  • ccswims
you arent dividing. its not 3/5, its 3 * 5. ok, what doesnt make sense to you during that part? why i multiplied the number outcome? Like, do you know why i multiplied 3 * 5 and 4 * 5?
anonymous
  • anonymous
no
ccswims
  • ccswims
ok, we need to get the common denominator because you cannot currently add 3/4 + 3/10 because the denominators are different
ccswims
  • ccswims
20 is the least common denominator we can use.
ccswims
  • ccswims
do you know why i picked 20?
anonymous
  • anonymous
no
ccswims
  • ccswims
ok, i picked 20 because both 4 and 10 can go into 20, right?
anonymous
  • anonymous
yes
ccswims
  • ccswims
ok, how do we multiply 4 to 20
ccswims
  • ccswims
what number multiplies with 4 to get 20?
anonymous
  • anonymous
5

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