Subtract 5/21 from 14/18
14/18 - 5/21 is 34/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
14/18 = 14 × 7/18 × 7 = 98/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
5/21 = 5 × 6/21 × 6 = 30/126 - Subtract the two like fractions:
98/126 - 30/126 = 98 - 30/126 = 68/126 - After reducing the fraction, the answer is 34/63
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