Subtract 12/63 from 42/18
1st number: 2 6/18, 2nd number: 12/63
42/18 - 12/63 is 15/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
42/18 = 42 × 7/18 × 7 = 294/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
12/63 = 12 × 2/63 × 2 = 24/126 - Subtract the two like fractions:
294/126 - 24/126 = 294 - 24/126 = 270/126 - After reducing the fraction, the answer is 15/7
- In mixed form: 21/7
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