Subtract 45/49 from 9/72
9/72 - 45/49 is -311/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
9/72 = 9 × 49/72 × 49 = 441/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
45/49 = 45 × 72/49 × 72 = 3240/3528 - Subtract the two like fractions:
441/3528 - 3240/3528 = 441 - 3240/3528 = -2799/3528 - After reducing the fraction, the answer is -311/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72-45/49 9/72-90/49 9/72-45/98 27/72-45/49 45/72-45/49 63/72-45/49