Add 4/20 and 6/90
4/20 + 6/90 is 4/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
6/90 = 6 × 2/90 × 2 = 12/180 - Add the two like fractions:
36/180 + 12/180 = 36 + 12/180 = 48/180 - 48/180 simplified gives 4/15
- So, 4/20 + 6/90 = 4/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+6/90 4/20+12/90 4/40+6/90 12/20+6/90 4/20+18/90 4/60+6/90 4/20+30/90 28/20+6/90 4/20+42/90