Subtract 35/12 from 63/42
1st number: 1 21/42, 2nd number: 2 11/12
63/42 - 35/12 is -17/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
63/42 = 63 × 2/42 × 2 = 126/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
35/12 = 35 × 7/12 × 7 = 245/84 - Subtract the two like fractions:
126/84 - 245/84 = 126 - 245/84 = -119/84 - After reducing the fraction, the answer is -17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/42-70/12 63/84-35/12 63/42-35/24 63/42-35/36 63/42-35/60 63/42-35/84