Add 5/90 and 7/72
5/90 + 7/72 is 11/72.
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,
7/72 = 7 × 5/72 × 5 = 35/360 - Add the two like fractions:
20/360 + 35/360 = 20 + 35/360 = 55/360 - 55/360 simplified gives 11/72
- So, 5/90 + 7/72 = 11/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90+7/72 5/90+14/72 15/90+7/72 5/90+21/72 25/90+7/72 5/90+35/72 35/90+7/72 5/90+49/72