Subtract 9/14 from 21/63
21/63 - 9/14 is -13/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
21/63 = 21 × 2/63 × 2 = 42/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
9/14 = 9 × 9/14 × 9 = 81/126 - Subtract the two like fractions:
42/126 - 81/126 = 42 - 81/126 = -39/126 - After reducing the fraction, the answer is -13/42
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