Add 90/18 and 63/15
1st number: 5 0/18, 2nd number: 4 3/15
90/18 + 63/15 is 46/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
63/15 = 63 × 6/15 × 6 = 378/90 - Add the two like fractions:
450/90 + 378/90 = 450 + 378/90 = 828/90 - 828/90 simplified gives 46/5
- So, 90/18 + 63/15 = 46/5
In mixed form: 91/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+63/15 90/18+63/30 90/54+63/15 90/18+63/45 90/18+63/75