Subtract 42/63 from 21/3
1st number: 7 0/3, 2nd number: 42/63
21/3 - 42/63 is 19/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 3 × 21 = 63,
21/3 = 21 × 21/3 × 21 = 441/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Subtract the two like fractions:
441/63 - 42/63 = 441 - 42/63 = 399/63 - After reducing the fraction, the answer is 19/3
- In mixed form: 61/3
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