Subtract 45/42 from 49/81
1st number: 49/81, 2nd number: 1 3/42
49/81 - 45/42 is -529/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
49/81 = 49 × 14/81 × 14 = 686/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
45/42 = 45 × 27/42 × 27 = 1215/1134 - Subtract the two like fractions:
686/1134 - 1215/1134 = 686 - 1215/1134 = -529/1134
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