10
5
it is the bottom of a fraction.. for example 2/5s.. the denomenator is 5 and the numerator is 2
5
120
the LCD is 20
35
The LCDis24.
Answer: It is: 5 and 2/5+3/5 = 1 Answer: If two fractions already have the same demoninator (bottom parts), as in this case, that IS the common denominator. You need no more calculations for this part (the part of finding the common denominator).
common denomenator
39
48
You do the denomenator (bottom number) and multilpy by the whole number (the stand alone number) and then once you find that answer add that to the numerator (top number), now you should have a whole number. Take that number and put it in the numerator (top number) and then use your denomenator (bottom number) from your original problem and use it as the denomenator for your final answer. You should now have and improper fracion with a bigger number on the top and a smaller number on the bottom.Example:2 1/2 = 5/2* you do 2X2=4 and then 4+1=5 and then take that and put it as the numerator 5/? and then take the original denomenator and add it back in to make it 5/2