Subtract 32/45 from 49/80
49/80 - 32/45 is -71/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
49/80 = 49 × 9/80 × 9 = 441/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
32/45 = 32 × 16/45 × 16 = 512/720 - Subtract the two like fractions:
441/720 - 512/720 = 441 - 512/720 = -71/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/80-32/45 49/80-64/45 49/80-32/90 49/80-96/45