Subtract 72/36 from 15/10
1st number: 1 5/10, 2nd number: 2 0/36
15/10 - 72/36 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 10 × 18 = 180,
15/10 = 15 × 18/10 × 18 = 270/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
72/36 = 72 × 5/36 × 5 = 360/180 - Subtract the two like fractions:
270/180 - 360/180 = 270 - 360/180 = -90/180 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/10-72/36 15/20-72/36 45/10-72/36 15/30-72/36 75/10-72/36 15/50-72/36 15/70-72/36