Subtract 27/16 from 42/84
1st number: 42/84, 2nd number: 1 11/16
42/84 - 27/16 is -19/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 84 × 4 = 336,
42/84 = 42 × 4/84 × 4 = 168/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
27/16 = 27 × 21/16 × 21 = 567/336 - Subtract the two like fractions:
168/336 - 567/336 = 168 - 567/336 = -399/336 - After reducing the fraction, the answer is -19/16
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