Subtract 72/27 from 21/4
1st number: 5 1/4, 2nd number: 2 18/27
21/4 - 72/27 is 31/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 4 × 27 = 108,
21/4 = 21 × 27/4 × 27 = 567/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
72/27 = 72 × 4/27 × 4 = 288/108 - Subtract the two like fractions:
567/108 - 288/108 = 567 - 288/108 = 279/108 - After reducing the fraction, the answer is 31/12
- In mixed form: 27/12
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