Subtract 80/7 from 40/63
1st number: 40/63, 2nd number: 11 3/7
40/63 - 80/7 is -680/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
40/63 = 40 × 1/63 × 1 = 40/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
80/7 = 80 × 9/7 × 9 = 720/63 - Subtract the two like fractions:
40/63 - 720/63 = 40 - 720/63 = -680/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-80/7 40/63-80/14 40/63-80/21 40/63-80/35 40/63-80/49