Subtract 30/63 from 18/12
1st number: 1 6/12, 2nd number: 30/63
18/12 - 30/63 is 43/42.
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,
18/12 = 18 × 21/12 × 21 = 378/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
30/63 = 30 × 4/63 × 4 = 120/252 - Subtract the two like fractions:
378/252 - 120/252 = 378 - 120/252 = 258/252 - After reducing the fraction, the answer is 43/42
- In mixed form: 11/42
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