Subtract 21/72 from 21/3
1st number: 7 0/3, 2nd number: 21/72
21/3 - 21/72 is 161/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
21/3 = 21 × 24/3 × 24 = 504/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Subtract the two like fractions:
504/72 - 21/72 = 504 - 21/72 = 483/72 - After reducing the fraction, the answer is 161/24
- In mixed form: 617/24
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