Subtract 28/20 from 32/21
1st number: 1 11/21, 2nd number: 1 8/20
32/21 - 28/20 is 13/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
32/21 = 32 × 20/21 × 20 = 640/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
28/20 = 28 × 21/20 × 21 = 588/420 - Subtract the two like fractions:
640/420 - 588/420 = 640 - 588/420 = 52/420 - After reducing the fraction, the answer is 13/105
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