Add 35/8 and 21/90
1st number: 4 3/8, 2nd number: 21/90
35/8 + 21/90 is 553/120.
Steps for adding 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,
35/8 = 35 × 45/8 × 45 = 1575/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Add the two like fractions:
1575/360 + 84/360 = 1575 + 84/360 = 1659/360 - 1659/360 simplified gives 553/120
- So, 35/8 + 21/90 = 553/120
In mixed form: 473/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8+21/90 35/8+42/90 35/16+21/90 35/8+63/90 35/24+21/90 35/40+21/90 35/56+21/90