Subtract 63/15 from 1/42
1st number: 1/42, 2nd number: 4 3/15
1/42 - 63/15 is -877/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
63/15 = 63 × 14/15 × 14 = 882/210 - Subtract the two like fractions:
5/210 - 882/210 = 5 - 882/210 = -877/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42-63/15 1/84-63/15 1/42-63/30 3/42-63/15 1/42-63/45 5/42-63/15 1/42-63/75 7/42-63/15