Subtract 8/21 from 4/27
4/27 - 8/21 is -44/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
4/27 = 4 × 7/27 × 7 = 28/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
8/21 = 8 × 9/21 × 9 = 72/189 - Subtract the two like fractions:
28/189 - 72/189 = 28 - 72/189 = -44/189
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