Subtract 21/40 from 72/27
1st number: 2 18/27, 2nd number: 21/40
72/27 - 21/40 is 257/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
72/27 = 72 × 40/27 × 40 = 2880/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
21/40 = 21 × 27/40 × 27 = 567/1080 - Subtract the two like fractions:
2880/1080 - 567/1080 = 2880 - 567/1080 = 2313/1080 - After reducing the fraction, the answer is 257/120
- In mixed form: 217/120
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