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Use the least common denominator to find the difference between fractions with unlike denominators.
For example: Let's find the difference of:
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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 |
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by 3 to find an equivalent fraction. |
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× |
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= |
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Now subtract fractions. Subtract numerators and keep denominators the same.
|
– |
|
| = |
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– |
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| = |
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is not written in simplest form. |
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÷ |
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= |
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| So, the required difference is |
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. |
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The correct answer is
The smallest number is the one that comes first while counting.
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.
