Add 90/18 and 72/30
1st number: 5 0/18, 2nd number: 2 12/30
90/18 + 72/30 is 37/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 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 30 × 3 = 90,
72/30 = 72 × 3/30 × 3 = 216/90 - Add the two like fractions:
450/90 + 216/90 = 450 + 216/90 = 666/90 - 666/90 simplified gives 37/5
- So, 90/18 + 72/30 = 37/5
In mixed form: 72/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36+72/30 90/18+72/60 90/54+72/30 90/18+72/90