Add 45/72 and 56/45
1st number: 45/72, 2nd number: 1 11/45
45/72 + 56/45 is 673/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
56/45 = 56 × 8/45 × 8 = 448/360 - Add the two like fractions:
225/360 + 448/360 = 225 + 448/360 = 673/360 - So, 45/72 + 56/45 = 673/360
In mixed form: 1313/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72+56/45 45/72+56/90