Subtract 30/40 from 70/28
1st number: 2 14/28, 2nd number: 30/40
70/28 - 30/40 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
70/28 = 70 × 10/28 × 10 = 700/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
30/40 = 30 × 7/40 × 7 = 210/280 - Subtract the two like fractions:
700/280 - 210/280 = 700 - 210/280 = 490/280 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28-60/40 70/56-30/40 70/28-30/80 70/28-90/40 70/84-30/40