Subtract 21/10 from 28/27
1st number: 1 1/27, 2nd number: 2 1/10
28/27 - 21/10 is -287/270.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
28/27 = 28 × 10/27 × 10 = 280/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
21/10 = 21 × 27/10 × 27 = 567/270 - Subtract the two like fractions:
280/270 - 567/270 = 280 - 567/270 = -287/270
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