Subtract 5/27 from 7/21
721 - 527 is 427.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
721 = 7 × 921 × 9 = 63189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
527 = 5 × 727 × 7 = 35189 - Subtract the two like fractions:
63189 - 35189 = 63 - 35189 = 28189 - After reducing the fraction, the answer is 427
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