Add 75/72 and 28/90
1st number: 1 3/72, 2nd number: 28/90
75/72 + 28/90 is 487/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
28/90 = 28 × 4/90 × 4 = 112/360 - Add the two like fractions:
375/360 + 112/360 = 375 + 112/360 = 487/360 - So, 75/72 + 28/90 = 487/360
In mixed form: 1127/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/72+56/90 75/72+84/90