Subtract 70/28 from 18/5
1st number: 3 3/5, 2nd number: 2 14/28
18/5 - 70/28 is 11/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 5 × 28 = 140,
18/5 = 18 × 28/5 × 28 = 504/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
70/28 = 70 × 5/28 × 5 = 350/140 - Subtract the two like fractions:
504/140 - 350/140 = 504 - 350/140 = 154/140 - After reducing the fraction, the answer is 11/10
- In mixed form: 11/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5-70/28 18/10-70/28 18/5-70/56 54/5-70/28 18/15-70/28 18/5-70/84 90/5-70/28 18/25-70/28 18/35-70/28