Add 20/8 and 63/90
1st number: 2 4/8, 2nd number: 63/90
20/8 + 63/90 is 16/5.
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,
20/8 = 20 × 45/8 × 45 = 900/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
63/90 = 63 × 4/90 × 4 = 252/360 - Add the two like fractions:
900/360 + 252/360 = 900 + 252/360 = 1152/360 - 1152/360 simplified gives 16/5
- So, 20/8 + 63/90 = 16/5
In mixed form: 31/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+63/90 20/16+63/90 60/8+63/90 20/24+63/90 20/40+63/90 20/56+63/90