Subtract 75/90 from 28/3
1st number: 9 1/3, 2nd number: 75/90
28/3 - 75/90 is 17/2.
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,
28/3 = 28 × 30/3 × 30 = 840/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
75/90 = 75 × 1/90 × 1 = 75/90 - Subtract the two like fractions:
840/90 - 75/90 = 840 - 75/90 = 765/90 - After reducing the fraction, the answer is 17/2
- In mixed form: 81/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/3-75/90 28/6-75/90 84/3-75/90 28/9-75/90 28/15-75/90 28/21-75/90