Subtract 21/90 from 36/3
1st number: 12 0/3, 2nd number: 21/90
36/3 - 21/90 is 353/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 3 × 30 = 90,
36/3 = 36 × 30/3 × 30 = 1080/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Subtract the two like fractions:
1080/90 - 21/90 = 1080 - 21/90 = 1059/90 - After reducing the fraction, the answer is 353/30
- In mixed form: 1123/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/3-21/90 36/3-42/90 36/6-21/90 36/3-63/90 36/9-21/90 36/15-21/90 36/21-21/90