Subtract 21/60 from 36/81
36/81 - 21/60 is 17/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 60 is 1620
Next, find the equivalent fraction of both fractional numbers with denominator 1620 - For the 1st fraction, since 81 × 20 = 1620,
36/81 = 36 × 20/81 × 20 = 720/1620 - Likewise, for the 2nd fraction, since 60 × 27 = 1620,
21/60 = 21 × 27/60 × 27 = 567/1620 - Subtract the two like fractions:
720/1620 - 567/1620 = 720 - 567/1620 = 153/1620 - After reducing the fraction, the answer is 17/180
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