Subtract 21/45 from 4/27
4/27 - 21/45 is -43/135.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 45 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
4/27 = 4 × 5/27 × 5 = 20/135 - Likewise, for the 2nd fraction, since 45 × 3 = 135,
21/45 = 21 × 3/45 × 3 = 63/135 - Subtract the two like fractions:
20/135 - 63/135 = 20 - 63/135 = -43/135
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