Subtract 1/80 from 9/8
1st number: 1 1/8, 2nd number: 1/80
9/8 - 1/80 is 89/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 8 × 10 = 80,
9/8 = 9 × 10/8 × 10 = 90/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
1/80 = 1 × 1/80 × 1 = 1/80 - Subtract the two like fractions:
90/80 - 1/80 = 90 - 1/80 = 89/80 - In mixed form: 19/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/8-1/80 9/8-2/80 9/16-1/80 27/8-1/80 9/8-3/80 9/24-1/80 45/8-1/80 9/8-5/80 9/40-1/80 63/8-1/80 9/8-7/80 9/56-1/80