Subtract 42/12 from 7/63
1st number: 7/63, 2nd number: 3 6/12
7/63 - 42/12 is -61/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 12 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
7/63 = 7 × 4/63 × 4 = 28/252 - Likewise, for the 2nd fraction, since 12 × 21 = 252,
42/12 = 42 × 21/12 × 21 = 882/252 - Subtract the two like fractions:
28/252 - 882/252 = 28 - 882/252 = -854/252 - After reducing the fraction, the answer is -61/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/63-42/12 7/63-84/12 7/63-42/24 21/63-42/12 7/63-42/36 35/63-42/12 7/63-42/60 49/63-42/12 7/63-42/84