Subtract 21/42 from 3/16
3/16 - 21/42 is -5/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
3/16 = 3 × 21/16 × 21 = 63/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336 - Subtract the two like fractions:
63/336 - 168/336 = 63 - 168/336 = -105/336 - After reducing the fraction, the answer is -5/16
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