Subtract 72/4 from 10/18
1st number: 10/18, 2nd number: 18 0/4
10/18 - 72/4 is -157/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 4 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 18 × 2 = 36,
10/18 = 10 × 2/18 × 2 = 20/36 - Likewise, for the 2nd fraction, since 4 × 9 = 36,
72/4 = 72 × 9/4 × 9 = 648/36 - Subtract the two like fractions:
20/36 - 648/36 = 20 - 648/36 = -628/36 - After reducing the fraction, the answer is -157/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-72/4 10/36-72/4 10/18-72/8 30/18-72/4 10/54-72/4 10/18-72/12 50/18-72/4 10/90-72/4 10/18-72/20 70/18-72/4 10/18-72/28