Subtract 7/21 from 5/6
5/6 - 7/21 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
5/6 = 5 × 7/6 × 7 = 35/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
7/21 = 7 × 2/21 × 2 = 14/42 - Subtract the two like fractions:
35/42 - 14/42 = 35 - 14/42 = 21/42 - After reducing the fraction, the answer is 1/2
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