Subtract 21/36 from 90/10
1st number: 9 0/10, 2nd number: 21/36
90/10 - 21/36 is 101/12.
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,
90/10 = 90 × 18/10 × 18 = 1620/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Subtract the two like fractions:
1620/180 - 105/180 = 1620 - 105/180 = 1515/180 - After reducing the fraction, the answer is 101/12
- In mixed form: 85/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-42/36 90/20-21/36 90/10-21/72 90/10-63/36 90/30-21/36 90/50-21/36 90/70-21/36