Subtract 21/63 from 42/12
1st number: 3 6/12, 2nd number: 21/63
42/12 - 21/63 is 19/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 12 × 21 = 252,
42/12 = 42 × 21/12 × 21 = 882/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
21/63 = 21 × 4/63 × 4 = 84/252 - Subtract the two like fractions:
882/252 - 84/252 = 882 - 84/252 = 798/252 - After reducing the fraction, the answer is 19/6
- In mixed form: 31/6
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