Add 75/90 and 7/28
75/90 + 7/28 is 13/12.
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,
75/90 = 75 × 14/90 × 14 = 1050/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
7/28 = 7 × 45/28 × 45 = 315/1260 - Add the two like fractions:
1050/1260 + 315/1260 = 1050 + 315/1260 = 1365/1260 - 1365/1260 simplified gives 13/12
- So, 75/90 + 7/28 = 13/12
In mixed form: 11/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/90+14/28 75/90+7/56 75/90+21/28 75/90+7/84 75/90+35/28 75/90+49/28