Subtract 42/9 from 45/49
1st number: 45/49, 2nd number: 4 6/9
45/49 - 42/9 is -551/147.
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,
45/49 = 45 × 9/49 × 9 = 405/441 - Likewise, for the 2nd fraction, since 9 × 49 = 441,
42/9 = 42 × 49/9 × 49 = 2058/441 - Subtract the two like fractions:
405/441 - 2058/441 = 405 - 2058/441 = -1653/441 - After reducing the fraction, the answer is -551/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-42/9 45/49-84/9 45/98-42/9 45/49-42/18 45/49-42/27 45/49-42/45 45/49-42/63