Subtract 40/28 from 70/9
1st number: 7 7/9, 2nd number: 1 12/28
70/9 - 40/28 is 400/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 9 × 28 = 252,
70/9 = 70 × 28/9 × 28 = 1960/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252 - Subtract the two like fractions:
1960/252 - 360/252 = 1960 - 360/252 = 1600/252 - After reducing the fraction, the answer is 400/63
- In mixed form: 622/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/9-80/28 70/18-40/28 70/9-40/56 70/27-40/28 70/9-40/84 70/45-40/28 70/63-40/28