Subtract 21/90 from 14/8
1st number: 1 6/8, 2nd number: 21/90
14/8 - 21/90 is 91/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
14/8 = 14 × 45/8 × 45 = 630/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Subtract the two like fractions:
630/360 - 84/360 = 630 - 84/360 = 546/360 - After reducing the fraction, the answer is 91/60
- In mixed form: 131/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/8-21/90 14/8-42/90 14/16-21/90 42/8-21/90 14/8-63/90 14/24-21/90 70/8-21/90 14/40-21/90 98/8-21/90 14/56-21/90