Subtract 70/9 from 9/42
1st number: 9/42, 2nd number: 7 7/9
9/42 - 70/9 is -953/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
9/42 = 9 × 3/42 × 3 = 27/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
70/9 = 70 × 14/9 × 14 = 980/126 - Subtract the two like fractions:
27/126 - 980/126 = 27 - 980/126 = -953/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42-70/9 9/84-70/9 9/42-70/18 27/42-70/9 9/42-70/27 45/42-70/9 9/42-70/45 63/42-70/9 9/42-70/63