Subtract 21/14 from 81/4
1st number: 20 1/4, 2nd number: 1 7/14
81/4 - 21/14 is 75/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 14 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
81/4 = 81 × 7/4 × 7 = 567/28 - Likewise, for the 2nd fraction, since 14 × 2 = 28,
21/14 = 21 × 2/14 × 2 = 42/28 - Subtract the two like fractions:
567/28 - 42/28 = 567 - 42/28 = 525/28 - After reducing the fraction, the answer is 75/4
- In mixed form: 183/4
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