Add 90/3 and 72/15
1st number: 30 0/3, 2nd number: 4 12/15
90/3 + 72/15 is 174/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
90/3 = 90 × 5/3 × 5 = 450/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
72/15 = 72 × 1/15 × 1 = 72/15 - Add the two like fractions:
450/15 + 72/15 = 450 + 72/15 = 522/15 - 522/15 simplified gives 174/5
- So, 90/3 + 72/15 = 174/5
In mixed form: 344/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6+72/15 90/3+72/30 90/9+72/15 90/3+72/45 90/15+72/15 90/3+72/75 90/21+72/15