Subtract 18/21 from 6/16
6/16 - 18/21 is -27/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
6/16 = 6 × 21/16 × 21 = 126/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
18/21 = 18 × 16/21 × 16 = 288/336 - Subtract the two like fractions:
126/336 - 288/336 = 126 - 288/336 = -162/336 - After reducing the fraction, the answer is -27/56
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