Add 4/15 and 90/18
1st number: 4/15, 2nd number: 5 0/18
4/15 + 90/18 is 79/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
4/15 = 4 × 6/15 × 6 = 24/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Add the two like fractions:
24/90 + 450/90 = 24 + 450/90 = 474/90 - 474/90 simplified gives 79/15
- So, 4/15 + 90/18 = 79/15
In mixed form: 54/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+90/18 4/30+90/18 4/15+90/36 12/15+90/18 4/45+90/18 4/15+90/54 20/15+90/18 4/75+90/18 28/15+90/18