Subtract 24/15 from 1/42
1st number: 1/42, 2nd number: 1 9/15
1/42 - 24/15 is -331/210.
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,
24/15 = 24 × 14/15 × 14 = 336/210 - Subtract the two like fractions:
5/210 - 336/210 = 5 - 336/210 = -331/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42-24/15 1/42-48/15 1/84-24/15 1/42-24/30 3/42-24/15 1/42-72/15 1/42-24/45 5/42-24/15 1/42-24/75 7/42-24/15