Subtract 90/84 from 28/5
1st number: 5 3/5, 2nd number: 1 6/84
28/5 - 90/84 is 317/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
28/5 = 28 × 84/5 × 84 = 2352/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420 - Subtract the two like fractions:
2352/420 - 450/420 = 2352 - 450/420 = 1902/420 - After reducing the fraction, the answer is 317/70
- In mixed form: 437/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/5-90/84 28/10-90/84 84/5-90/84 28/15-90/84 28/25-90/84 28/35-90/84