Question

Can someone help me solve 92 29/30 - 15 13/15? I know the common denominator would be 15...

Answer 1

subtract the whole numbers
subtract the fractions

Answer 2

\(\huge 92\frac{29}{30} - 15\frac{13}{15}\)

Answer 3

its like above ?

Answer 4

yes, just like that!

Answer 5

you can write the same as :

\(\huge (92 + \frac{29}{30}) - (15 + \frac{13}{15}) \)

Answer 6

you can group the whole numbers, and fractions separately

Answer 7

\(\huge (92 - 15) + (\frac{29}{30} - \frac{13}{15})\)

Answer 8

does this make sense so far ?

Answer 9

You stole my method @ganeshie8, but I'm cool with it. :P

Answer 10

lol i stole your many methods :P

Answer 11

okay so the fraction would be 16/15?

Answer 12

nopes... while subtracting fractions, you need to make denominators common

Answer 13

the fraction part :

\(\huge (\frac {29}{30} - \frac{13}{15})\)


\(\huge (\frac {29}{30} - \frac{13*2}{15*2})\)

\(\huge (\frac {29}{30} - \frac{26}{30})\)

Answer 14

now since the denominators are same, you can subtract numerators !!

Answer 15

oh okay, so the answer is 77 3/1? I'm confused with the 30

Answer 16

okay.... 30 is just the LCM or common-denominator

77 3/30

you can simplify further, 3 goes in 30

Answer 17

77 1/10?

Answer 18

thats right ! good work :P

btw, did you get that 30 thingy in fraction part... ?

Answer 19

Oh I meant subtracting 30 - 30

Answer 20

oh denominators we dont subtract.
below next steps for fraction part, see if it helps :

Answer 21

\(\huge \frac {29}{30} - \frac{26}{30} \)


\(\huge \frac {1}{30}(29-26) \)


\(\huge \frac {1}{30}(3) \)

\(\huge \frac {3}{30} \)

\(\huge \frac {1}{10} \)

Answer 22

once we have the common denominator of 30, we factored out 1/30 and subtracted 29-26

Answer 23

okay, thank you!

Answer 24

np :D