Subtract 70/9 from 8/30
1st number: 8/30, 2nd number: 7 7/9
8/30 - 70/9 is -338/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
8/30 = 8 × 3/30 × 3 = 24/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
70/9 = 70 × 10/9 × 10 = 700/90 - Subtract the two like fractions:
24/90 - 700/90 = 24 - 700/90 = -676/90 - After reducing the fraction, the answer is -338/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/30-70/9 8/60-70/9 8/30-70/18 24/30-70/9 8/90-70/9 8/30-70/27 40/30-70/9 8/30-70/45 56/30-70/9 8/30-70/63