what is 18 1/15 - 9 3/5

Question

anonymous · Answer

you mean 18/15 - 27/5? if so it equals 4.2 or 21/5

yuki · Answer

is it$$18 {1 \over 15} - 9 {3 \over 5}$$

?

anonymous · Answer

yes yuki

yuki · Answer

mixed numbers are fairly easy when you understand that it can also be changed into an equivalent improper fraction

anonymous · Answer

ooh  271/15 - 48/5 =  31/5 ? lol i think

anonymous · Answer

which is 6 5/1

yuki · Answer

for example,

$$18 {1 \over 15}= 18 + {1 \over 15}$$

so

$${18*15+1 \over 15} = {217 \over 15}$$

yuki · Answer

you do the same thing with the other fraction,
but before we do that, we need to make the denominator common.

so instead of

$$9 {3 \over 5}$$ we will use

$$9 {9 \over 15}$$

which as an improper fraction, is

$${9*15+9 \over 15} = {144 \over 15}$$

anonymous · Answer

Who elsee gott daht?

yuki · Answer

now if you subtract them,

$${217 - 144 \over 15} = {73 \over 15}$$

yuki · Answer

if you need it as a mixed number,

73 / 15 = 4 remainder 13

so

$$4 {13 \over 15}$$

anonymous · Answer

I GOT DIFF.