Subtract 8/14 from 72/21
1st number: 3 9/21, 2nd number: 8/14
72/21 - 8/14 is 20/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
8/14 = 8 × 3/14 × 3 = 24/42 - Subtract the two like fractions:
144/42 - 24/42 = 144 - 24/42 = 120/42 - After reducing the fraction, the answer is 20/7
- In mixed form: 26/7
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