Subtract 48/18 from 81/84
1st number: 81/84, 2nd number: 2 12/18
81/84 - 48/18 is -143/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
81/84 = 81 × 3/84 × 3 = 243/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
48/18 = 48 × 14/18 × 14 = 672/252 - Subtract the two like fractions:
243/252 - 672/252 = 243 - 672/252 = -429/252 - After reducing the fraction, the answer is -143/84
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