Subtract 20/9 from 7/49
1st number: 7/49, 2nd number: 2 2/9
7/49 - 20/9 is -131/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
7/49 = 7 × 9/49 × 9 = 63/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
20/9 = 20 × 49/9 × 49 = 980/441 - Subtract the two like fractions:
63/441 - 980/441 = 63 - 980/441 = -917/441 - After reducing the fraction, the answer is -131/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/49-20/9 7/49-40/9 7/98-20/9 7/49-20/18 21/49-20/9 7/49-60/9 7/49-20/27 35/49-20/9 7/49-20/45 7/49-20/63