Subtract 5/72 from 28/21
1st number: 1 7/21, 2nd number: 5/72
28/21 - 5/72 is 91/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
28/21 = 28 × 24/21 × 24 = 672/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
5/72 = 5 × 7/72 × 7 = 35/504 - Subtract the two like fractions:
672/504 - 35/504 = 672 - 35/504 = 637/504 - After reducing the fraction, the answer is 91/72
- In mixed form: 119/72
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