Subtract 3/80 from 49/45
1st number: 1 4/45, 2nd number: 3/80
49/45 - 3/80 is 757/720.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
49/45 = 49 × 16/45 × 16 = 784/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
3/80 = 3 × 9/80 × 9 = 27/720 - Subtract the two like fractions:
784/720 - 27/720 = 784 - 27/720 = 757/720 - In mixed form: 137/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/45-3/80 49/45-6/80 49/90-3/80 49/45-9/80 49/45-15/80 49/45-21/80