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nene08
nene08 asks:
Q:

how do i do this problem 1/3+5/6-2/9

In Topics: Back to school
> 60 days ago

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PaulaBeckerman
PaulaBecker... writes:
First you need to make all the fractions have the same denominator - the bottom number.  You're working with thirds, sixths and ninths.  All of those can be converted to 18ths (3, 6 and 9 all can go into 18).  Let's convert 1/3 to ?/18 first.  To change the denominator (3) to 18, you multiply it by 6, so you also multiply the numerator (number on the top) by 6.  So 1/3 = 6/18.  Convert 5/6 next.  To change the denominator (6) to 18 you multiply by 3, so do the same with the numerator (in this case 5).  5 x 3 = 15, so 5/6 = 15/18.  Convert the final number 2/9 to ?/18.  To change the denominator 9 to 18, you multiply by 2, so do the same thing with the numerator.  2 x 2 = 4, so 2/9 = 4/18.

Now they are all converted to 18ths, you can do the addition and subtraction.  With the conversions, we now show the problem as
6/18 + 15/18 - 4/18 = ? The numerators are added or subtracted: 6 + 15 - 4 = 17.  The denominator is 18 for all the fractions.  So your answer is 17/18.
> 60 days ago

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heenal
heenal writes:
first dived the 1/3 than dived 5/6 and than -2/9 after pluse all number after minsue that number.
> 60 days ago

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