Subtract 18/63 from 80/7
1st number: 11 3/7, 2nd number: 18/63
80/7 - 18/63 is 78/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
80/7 = 80 × 9/7 × 9 = 720/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
18/63 = 18 × 1/63 × 1 = 18/63 - Subtract the two like fractions:
720/63 - 18/63 = 720 - 18/63 = 702/63 - After reducing the fraction, the answer is 78/7
- In mixed form: 111/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7-36/63 80/14-18/63 80/7-54/63 80/21-18/63 80/7-90/63 80/35-18/63 80/49-18/63