Subtract 18/9 from 56/49
1st number: 1 7/49, 2nd number: 2 0/9
56/49 - 18/9 is -6/7.
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,
56/49 = 56 × 9/49 × 9 = 504/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
18/9 = 18 × 49/9 × 49 = 882/441 - Subtract the two like fractions:
504/441 - 882/441 = 504 - 882/441 = -378/441 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/49-36/9 56/98-18/9 56/49-54/9 56/49-18/27 56/49-90/9 56/49-18/45 56/49-18/63