Subtract 21/27 from 40/28
1st number: 1 12/28, 2nd number: 21/27
40/28 - 21/27 is 41/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
40/28 = 40 × 27/28 × 27 = 1080/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
21/27 = 21 × 28/27 × 28 = 588/756 - Subtract the two like fractions:
1080/756 - 588/756 = 1080 - 588/756 = 492/756 - After reducing the fraction, the answer is 41/63
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