Subtract 45/49 from 32/72
32/72 - 45/49 is -209/441.
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,
32/72 = 32 × 49/72 × 49 = 1568/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
45/49 = 45 × 72/49 × 72 = 3240/3528 - Subtract the two like fractions:
1568/3528 - 3240/3528 = 1568 - 3240/3528 = -1672/3528 - After reducing the fraction, the answer is -209/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/72-45/49 32/72-90/49 32/72-45/98 96/72-45/49