Subtract 28/7 from 21/2
1st number: 10 1/2, 2nd number: 4 0/7
21/2 - 28/7 is 13/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
21/2 = 21 × 7/2 × 7 = 147/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
28/7 = 28 × 2/7 × 2 = 56/14 - Subtract the two like fractions:
147/14 - 56/14 = 147 - 56/14 = 91/14 - After reducing the fraction, the answer is 13/2
- In mixed form: 61/2
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