Subtract 21/18 from 28/49
1st number: 28/49, 2nd number: 1 3/18
28/49 - 21/18 is -25/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 49 × 18 = 882,
28/49 = 28 × 18/49 × 18 = 504/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
21/18 = 21 × 49/18 × 49 = 1029/882 - Subtract the two like fractions:
504/882 - 1029/882 = 504 - 1029/882 = -525/882 - After reducing the fraction, the answer is -25/42
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