Subtract 4/21 from 42/63
42/63 - 4/21 is 10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
4/21 = 4 × 3/21 × 3 = 12/63 - Subtract the two like fractions:
42/63 - 12/63 = 42 - 12/63 = 30/63 - After reducing the fraction, the answer is 10/21
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