Subtract 21/27 from 4/5
4/5 - 21/27 is 1/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 5 × 27 = 135,
4/5 = 4 × 27/5 × 27 = 108/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Subtract the two like fractions:
108/135 - 105/135 = 108 - 105/135 = 3/135 - After reducing the fraction, the answer is 1/45
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