Subtract 21/18 from 45/49
1st number: 45/49, 2nd number: 1 3/18
45/49 - 21/18 is -73/294.
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,
45/49 = 45 × 18/49 × 18 = 810/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
21/18 = 21 × 49/18 × 49 = 1029/882 - Subtract the two like fractions:
810/882 - 1029/882 = 810 - 1029/882 = -219/882 - After reducing the fraction, the answer is -73/294
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