Use least common denominator to find the sum of fractions with unlike denominators.
For example: Let's find the sum of:
Notice that 28 is the common denominator.
First of all, rewrite both the fractions having common denominator 28.
Multiply the numerator and denominator of |
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by 4 to find an equivalent fraction. |
Multiply the numerator and denominator of |
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by 7 to find an equivalent fraction. |
Now add fractions. Add numerators and keep denominators the same.
= |
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is written in simplest form. |
So, the required sum is |
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. |