Add 28/45 and 75/72
1st number: 28/45, 2nd number: 1 3/72
28/45 + 75/72 is 599/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
28/45 = 28 × 8/45 × 8 = 224/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Add the two like fractions:
224/360 + 375/360 = 224 + 375/360 = 599/360 - So, 28/45 + 75/72 = 599/360
In mixed form: 1239/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45+75/72 28/90+75/72 84/45+75/72