Subtract 14/81 from 90/8
1st number: 11 2/8, 2nd number: 14/81
90/8 - 14/81 is 3589/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
90/8 = 90 × 81/8 × 81 = 7290/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
14/81 = 14 × 8/81 × 8 = 112/648 - Subtract the two like fractions:
7290/648 - 112/648 = 7290 - 112/648 = 7178/648 - After reducing the fraction, the answer is 3589/324
- In mixed form: 1125/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-28/81 90/16-14/81 90/8-42/81 90/24-14/81 90/8-70/81 90/40-14/81 90/8-98/81 90/56-14/81