Subtract 7/80 from 45/2
1st number: 22 1/2, 2nd number: 7/80
45/2 - 7/80 is 1793/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
45/2 = 45 × 40/2 × 40 = 1800/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Subtract the two like fractions:
1800/80 - 7/80 = 1800 - 7/80 = 1793/80 - In mixed form: 2233/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2-7/80 45/2-14/80 45/4-7/80 45/2-21/80 45/6-7/80 45/2-35/80 45/10-7/80 45/2-49/80 45/14-7/80