Subtract 14/8 from 81/18
1st number: 4 9/18, 2nd number: 1 6/8
81/18 - 14/8 is 11/4.
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,
81/18 = 81 × 4/18 × 4 = 324/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
14/8 = 14 × 9/8 × 9 = 126/72 - Subtract the two like fractions:
324/72 - 126/72 = 324 - 126/72 = 198/72 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/18-28/8 81/36-14/8 81/18-14/16 81/18-42/8 81/54-14/8 81/18-14/24 81/18-70/8 81/90-14/8 81/18-14/40 81/18-98/8 81/18-14/56