Subtract 9/70 from 28/9
1st number: 3 1/9, 2nd number: 9/70
28/9 - 9/70 is 1879/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
28/9 = 28 × 70/9 × 70 = 1960/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
9/70 = 9 × 9/70 × 9 = 81/630 - Subtract the two like fractions:
1960/630 - 81/630 = 1960 - 81/630 = 1879/630 - In mixed form: 2619/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/9-9/70 28/9-18/70 28/18-9/70 84/9-9/70 28/9-27/70 28/27-9/70 28/9-45/70 28/45-9/70 28/9-63/70 28/63-9/70