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Subtract Fractions with Unlike Denominators
Use the least common denominator to find the difference between fractions with unlike denominators.
For example: Let's find the difference of:
|
and |
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Notice that 6 is the common denominator.
First of all, rewrite the fraction having common denominator 6.
| Multiply the numerator and denominator of |
|
by 3 to find an equivalent fraction. |
|
× |
|
= |
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Now subtract fractions. Subtract numerators and keep denominators the same.
|
– |
|
| = |
|
– |
|
| = |
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is not written in simplest form. |
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÷ |
|
= |
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| So, the required difference is |
|
. |
ds
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Help
The correct answer is
Remember :
The smallest number is the one that comes first while counting.
Solution :
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21,27,23
21 is the smallest number.
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