Add 20/8 and 25/90
1st number: 2 4/8, 2nd number: 25/90
20/8 + 25/90 is 25/9.
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,
25/90 = 25 × 4/90 × 4 = 100/360 - Add the two like fractions:
900/360 + 100/360 = 900 + 100/360 = 1000/360 - 1000/360 simplified gives 25/9
- So, 20/8 + 25/90 = 25/9
In mixed form: 27/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/8+25/90 20/8+50/90 20/16+25/90 60/8+25/90 20/8+75/90 20/24+25/90 20/40+25/90 20/56+25/90