Subtract 10/14 from 72/21
1st number: 3 9/21, 2nd number: 10/14
72/21 - 10/14 is 19/7.
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,
10/14 = 10 × 3/14 × 3 = 30/42 - Subtract the two like fractions:
144/42 - 30/42 = 144 - 30/42 = 114/42 - After reducing the fraction, the answer is 19/7
- In mixed form: 25/7
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