Subtract 36/7 from 20/18
1st number: 1 2/18, 2nd number: 5 1/7
20/18 - 36/7 is -254/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
20/18 = 20 × 7/18 × 7 = 140/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
36/7 = 36 × 18/7 × 18 = 648/126 - Subtract the two like fractions:
140/126 - 648/126 = 140 - 648/126 = -508/126 - After reducing the fraction, the answer is -254/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18-36/7 20/18-72/7 20/36-36/7 20/18-36/14 60/18-36/7 20/54-36/7 20/18-36/21 20/90-36/7 20/18-36/35 20/18-36/49