Add 5/90 and 72/28
1st number: 5/90, 2nd number: 2 16/28
5/90 + 72/28 is 331/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
5/90 = 5 × 14/90 × 14 = 70/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
72/28 = 72 × 45/28 × 45 = 3240/1260 - Add the two like fractions:
70/1260 + 3240/1260 = 70 + 3240/1260 = 3310/1260 - 3310/1260 simplified gives 331/126
- So, 5/90 + 72/28 = 331/126
In mixed form: 279/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90+72/28 5/90+72/56 15/90+72/28 5/90+72/84 25/90+72/28 35/90+72/28