9/14 - 1/7
------------
9/14 + 1/7

Question

9/14 - 1/7
------------
9/14 + 1/7

anonymous · Answer

find an LCD first

anonymous · Answer

1/7 is the same as 2/14 right?  so now you can subtract the numbers with common denominators

erniellyd28 · Answer

yes it is

erniellyd28 · Answer

top and bottom?

erniellyd28 · Answer

because the bottom is addition

anonymous · Answer

good observation

erniellyd28 · Answer

if i may ask i have 2 question 1st did u have to find the lcd?
 and 2nd do u find the lcd for addition part and add those instead of subtracting them?

anonymous · Answer

yes you must find the lcd for all of the fractions present in the problem.  Also, yes you add instead of subtracting in the denominator (there is an addition sign).

erniellyd28 · Answer

oh ok i thought u switch the sign for some reason i don't know why i thought that

anonymous · Answer

that's ok

erniellyd28 · Answer

and that give me    1  7   right because thats what the book says
                                 ---
                                  25

erniellyd28 · Answer

or is that wrong?

anonymous · Answer

that is not what I calculated, try it yourself before checking the book.

erniellyd28 · Answer

thank u so very much for all your help

erniellyd28 · Answer

u have a good night

anonymous · Answer

thanks you too.  Did you figure it out?

erniellyd28 · Answer

i figured out how to do it but now im confused on the answer

anonymous · Answer

what answer did YOU get?

erniellyd28 · Answer

well i haven't tried because i didnt know what to do so i just took the easy which i know i shouldn't have and looked in the book and said 1 7/25

anonymous · Answer

are you sure you are looking at the correct problem, because I got an answer that is not the same.

erniellyd28 · Answer

actually you are right i was looking at the wrong problem and i can't see the answer because its an even number problem

erniellyd28 · Answer

so i don't know what it is

anonymous · Answer

so let's do it now...

erniellyd28 · Answer

forgive me if i sound retarded and asking this but i just want to make sure i understand so for the first part is 1/7 - 2/14 or is it just 2/14?

anonymous · Answer

you still have to keep the other fractions, you are just changing the fractions with denominators of 7.  So what do you think is the new numerator?

erniellyd28 · Answer

14?

anonymous · Answer

not exactly, you keep 9/14 and you subtract a new fraction with the same denominator (14).  How do you change 1/7 into a fraction with denominator 14?

erniellyd28 · Answer

find a number that goes into both 7 and 14?

anonymous · Answer

not exactly.  maybe this will help...

anonymous · Answer

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