Subtract 98/81 from 9/42
1st number: 9/42, 2nd number: 1 17/81
9/42 - 98/81 is -1129/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
9/42 = 9 × 27/42 × 27 = 243/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
98/81 = 98 × 14/81 × 14 = 1372/1134 - Subtract the two like fractions:
243/1134 - 1372/1134 = 243 - 1372/1134 = -1129/1134
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