Subtract 1/21 from 9/56
9/56 - 1/21 is 19/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
9/56 = 9 × 3/56 × 3 = 27/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
1/21 = 1 × 8/21 × 8 = 8/168 - Subtract the two like fractions:
27/168 - 8/168 = 27 - 8/168 = 19/168
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