Add 5/15 and 4/90
5/15 + 4/90 is 17/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
5/15 = 5 × 6/15 × 6 = 30/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
4/90 = 4 × 1/90 × 1 = 4/90 - Add the two like fractions:
30/90 + 4/90 = 30 + 4/90 = 34/90 - 34/90 simplified gives 17/45
- So, 5/15 + 4/90 = 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+4/90 5/15+8/90 5/30+4/90 5/15+12/90 5/45+4/90 25/15+4/90 5/15+20/90 5/75+4/90 35/15+4/90 5/15+28/90