Subtract 5/70 from 90/28
1st number: 3 6/28, 2nd number: 5/70
90/28 - 5/70 is 22/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
90/28 = 90 × 5/28 × 5 = 450/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
5/70 = 5 × 2/70 × 2 = 10/140 - Subtract the two like fractions:
450/140 - 10/140 = 450 - 10/140 = 440/140 - After reducing the fraction, the answer is 22/7
- In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28-10/70 90/56-5/70 90/28-15/70 90/84-5/70 90/28-25/70 90/28-35/70