Subtract 20/9 from 35/42
1st number: 35/42, 2nd number: 2 2/9
35/42 - 20/9 is -25/18.
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,
35/42 = 35 × 3/42 × 3 = 105/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
20/9 = 20 × 14/9 × 14 = 280/126 - Subtract the two like fractions:
105/126 - 280/126 = 105 - 280/126 = -175/126 - After reducing the fraction, the answer is -25/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-20/9 35/42-40/9 35/84-20/9 35/42-20/18 35/42-60/9 35/42-20/27 35/42-20/45 35/42-20/63