Subtract 15/10 from 36/21
1st number: 1 15/21, 2nd number: 1 5/10
36/21 - 15/10 is 3/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
36/21 = 36 × 10/21 × 10 = 360/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
15/10 = 15 × 21/10 × 21 = 315/210 - Subtract the two like fractions:
360/210 - 315/210 = 360 - 315/210 = 45/210 - After reducing the fraction, the answer is 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/21-15/10 36/21-30/10 36/42-15/10 36/21-15/20 36/21-45/10 36/63-15/10 36/21-15/30 36/21-75/10 36/21-15/50 36/21-15/70