Add 35/28 and 30/90
1st number: 1 7/28, 2nd number: 30/90
35/28 + 30/90 is 19/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
35/28 = 35 × 45/28 × 45 = 1575/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
30/90 = 30 × 14/90 × 14 = 420/1260 - Add the two like fractions:
1575/1260 + 420/1260 = 1575 + 420/1260 = 1995/1260 - 1995/1260 simplified gives 19/12
- So, 35/28 + 30/90 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/28+30/90 35/28+60/90 35/56+30/90 35/84+30/90