Subtract 60/81 from 4/21
4/21 - 60/81 is -104/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 21 × 27 = 567,
4/21 = 4 × 27/21 × 27 = 108/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
60/81 = 60 × 7/81 × 7 = 420/567 - Subtract the two like fractions:
108/567 - 420/567 = 108 - 420/567 = -312/567 - After reducing the fraction, the answer is -104/189
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