Add 56/90 and 45/72
56/90 + 45/72 is 449/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
56/90 = 56 × 4/90 × 4 = 224/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
45/72 = 45 × 5/72 × 5 = 225/360 - Add the two like fractions:
224/360 + 225/360 = 224 + 225/360 = 449/360 - So, 56/90 + 45/72 = 449/360
In mixed form: 189/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+90/72