Add 4/8 and 20/90
4/8 + 20/90 is 13/18.
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,
4/8 = 4 × 45/8 × 45 = 180/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Add the two like fractions:
180/360 + 80/360 = 180 + 80/360 = 260/360 - 260/360 simplified gives 13/18
- So, 4/8 + 20/90 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/8+40/90 4/16+20/90 12/8+20/90 4/8+60/90 4/24+20/90 20/8+20/90 4/40+20/90 28/8+20/90 4/56+20/90