SOLUTION: I subtracted {{{7&3/4}}} - {{{3&5/6}}} and I came up with {{{4&1/12}}} but that was not right can u help me?

Question 519261: I subtracted - and I came up with
but that was not right can u help me?

Found 2 solutions by stanbon, Edwin McCravy:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I subtracted 7 3/4 from 3 5/6 and i came up with 4 1/12.
----------------------
3 5/6 - 7 3/4
Convert to fraction form:
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= (6*3+5)/6 - (4*7+3)/4
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= 23/6 - 31/4
Establish a common denominator:
---
= (46/12) - (93/12)
---
= -47/12
Convert to mixed-number form:
---
= -3 11/12
==========
Cheers,
Stan H.
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!

This is the way they teach you to do it in most schools. Do not change mixed numbers to improper fractions when adding and subtracting but leave them as mixed numbers like this: 7 = 7 = 6 -3 = -3 = -3 ------------------------------ 3 Notice in the last step the 7 was changed to 6 and the fraction was changed by adding 12 to the numerator. In other words, we "borrowed" 1 from the 7, and called it ths and added it to the fraction and got , so we'd have a larger fraction on top. Edwin

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