Subtract 9/8 from 80/18
1st number: 4 8/18, 2nd number: 1 1/8
80/18 - 9/8 is 239/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
80/18 = 80 × 4/18 × 4 = 320/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
9/8 = 9 × 9/8 × 9 = 81/72 - Subtract the two like fractions:
320/72 - 81/72 = 320 - 81/72 = 239/72 - In mixed form: 323/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-18/8 80/36-9/8 80/18-9/16 80/18-27/8 80/54-9/8 80/18-9/24 80/18-45/8 80/90-9/8 80/18-9/40 80/18-63/8 80/18-9/56