Add 72/30 and 28/72
1st number: 2 12/30, 2nd number: 28/72
72/30 + 28/72 is 251/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
72/30 = 72 × 12/30 × 12 = 864/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Add the two like fractions:
864/360 + 140/360 = 864 + 140/360 = 1004/360 - 1004/360 simplified gives 251/90
- So, 72/30 + 28/72 = 251/90
In mixed form: 271/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/30+56/72 72/60+28/72 72/30+84/72 72/90+28/72