Add 72/30 and 36/90
1st number: 2 12/30, 2nd number: 36/90
72/30 + 36/90 is 14/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
72/30 = 72 × 3/30 × 3 = 216/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
36/90 = 36 × 1/90 × 1 = 36/90 - Add the two like fractions:
216/90 + 36/90 = 216 + 36/90 = 252/90 - 252/90 simplified gives 14/5
- So, 72/30 + 36/90 = 14/5
In mixed form: 24/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+72/90 72/60+36/90 72/90+36/90