Subtract 18/63 from 40/7
1st number: 5 5/7, 2nd number: 18/63
40/7 - 18/63 is 38/7.
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,
40/7 = 40 × 9/7 × 9 = 360/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
18/63 = 18 × 1/63 × 1 = 18/63 - Subtract the two like fractions:
360/63 - 18/63 = 360 - 18/63 = 342/63 - After reducing the fraction, the answer is 38/7
- In mixed form: 53/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/7-18/63 40/7-36/63 40/14-18/63 40/7-54/63 40/21-18/63 40/7-90/63 40/35-18/63 40/49-18/63