Subtract 15/8 from 45/49
1st number: 45/49, 2nd number: 1 7/8
45/49 - 15/8 is -375/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
45/49 = 45 × 8/49 × 8 = 360/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
15/8 = 15 × 49/8 × 49 = 735/392 - Subtract the two like fractions:
360/392 - 735/392 = 360 - 735/392 = -375/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-15/8 45/49-30/8 45/98-15/8 45/49-15/16 45/49-45/8 45/49-15/24 45/49-75/8 45/49-15/40 45/49-15/56