Subtract 42/9 from 28/81
1st number: 28/81, 2nd number: 4 6/9
28/81 - 42/9 is -350/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
28/81 = 28 × 1/81 × 1 = 28/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
42/9 = 42 × 9/9 × 9 = 378/81 - Subtract the two like fractions:
28/81 - 378/81 = 28 - 378/81 = -350/81
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