Subtract 36/18 from 45/7
1st number: 6 3/7, 2nd number: 2 0/18
45/7 - 36/18 is 31/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
45/7 = 45 × 18/7 × 18 = 810/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
36/18 = 36 × 7/18 × 7 = 252/126 - Subtract the two like fractions:
810/126 - 252/126 = 810 - 252/126 = 558/126 - After reducing the fraction, the answer is 31/7
- In mixed form: 43/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-36/18 45/7-72/18 45/14-36/18 45/21-36/18 45/7-36/54 45/35-36/18 45/7-36/90 45/49-36/18