Subtract 75/90 from 84/28
1st number: 3 0/28, 2nd number: 75/90
84/28 - 75/90 is 13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
84/28 = 84 × 45/28 × 45 = 3780/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
75/90 = 75 × 14/90 × 14 = 1050/1260 - Subtract the two like fractions:
3780/1260 - 1050/1260 = 3780 - 1050/1260 = 2730/1260 - After reducing the fraction, the answer is 13/6
- In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56-75/90