Subtract 18/16 from 1/21
1st number: 1/21, 2nd number: 1 2/16
1/21 - 18/16 is -181/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
1/21 = 1 × 16/21 × 16 = 16/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
18/16 = 18 × 21/16 × 21 = 378/336 - Subtract the two like fractions:
16/336 - 378/336 = 16 - 378/336 = -362/336 - After reducing the fraction, the answer is -181/168
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