Add 5/90 and 84/72
1st number: 5/90, 2nd number: 1 12/72
5/90 + 84/72 is 11/9.
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,
5/90 = 5 × 4/90 × 4 = 20/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
84/72 = 84 × 5/72 × 5 = 420/360 - Add the two like fractions:
20/360 + 420/360 = 20 + 420/360 = 440/360 - 440/360 simplified gives 11/9
- So, 5/90 + 84/72 = 11/9
In mixed form: 12/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90+84/72 15/90+84/72 25/90+84/72 35/90+84/72