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Subtracting mixed numbers with unlike denominators
8 \ (9)/(12) - 3 \ (1)/(6)

1 Answer

4 votes

Given:


8(9)/(12)-3(1)/(6)

We will be subtracting mixed numbers as follows:

First) convert the mixed numbers to fractions as follows:


\begin{gathered} 8(9)/(12)=(12\cdot8+9)/(12)=(105)/(12) \\ \\ 3(1)/(6)=(6\cdot3+1)/(6)=(19)/(6) \end{gathered}

Second) make the denominators the same number by finding the lowest common denominator

The least common denominator of 6 and 12 = 12

So, the first fraction will not change

the second fraction will be as follows:


(19)/(6)=(19\cdot2)/(6\cdot2)=(38)/(12)

Finally, the subtraction process will be as follows:


8(9)/(12)-3(1)/(6)=(105)/(12)-(38)/(12)=(105-38)/(12)=(67)/(12)

Convert the fraction to a mixed number


(67)/(12)=5(7)/(12)

So, the answer will be:


5(7)/(12)

User Yan Takushevich
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