Subtract 80/90 from 28/5
1st number: 5 3/5, 2nd number: 80/90
28/5 - 80/90 is 212/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
28/5 = 28 × 18/5 × 18 = 504/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Subtract the two like fractions:
504/90 - 80/90 = 504 - 80/90 = 424/90 - After reducing the fraction, the answer is 212/45
- In mixed form: 432/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5-80/90 28/10-80/90 84/5-80/90 28/15-80/90 28/25-80/90 28/35-80/90