Subtract 42/24 from 21/27
1st number: 21/27, 2nd number: 1 18/24
21/27 - 42/24 is -35/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
42/24 = 42 × 9/24 × 9 = 378/216 - Subtract the two like fractions:
168/216 - 378/216 = 168 - 378/216 = -210/216 - After reducing the fraction, the answer is -35/36
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