Subtract 49/15 from 45/42
1st number: 1 3/42, 2nd number: 3 4/15
45/42 - 49/15 is -461/210.
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,
45/42 = 45 × 5/42 × 5 = 225/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
49/15 = 49 × 14/15 × 14 = 686/210 - Subtract the two like fractions:
225/210 - 686/210 = 225 - 686/210 = -461/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-49/15 45/42-98/15 45/84-49/15 45/42-49/30 45/42-49/45 45/42-49/75