Subtract 21/20 from 72/27
1st number: 2 18/27, 2nd number: 1 1/20
72/27 - 21/20 is 97/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
72/27 = 72 × 20/27 × 20 = 1440/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
21/20 = 21 × 27/20 × 27 = 567/540 - Subtract the two like fractions:
1440/540 - 567/540 = 1440 - 567/540 = 873/540 - After reducing the fraction, the answer is 97/60
- In mixed form: 137/60
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