Add 30/28 and 35/90
1st number: 1 2/28, 2nd number: 35/90
30/28 + 35/90 is 92/63.
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,
30/28 = 30 × 45/28 × 45 = 1350/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
35/90 = 35 × 14/90 × 14 = 490/1260 - Add the two like fractions:
1350/1260 + 490/1260 = 1350 + 490/1260 = 1840/1260 - 1840/1260 simplified gives 92/63
- So, 30/28 + 35/90 = 92/63
In mixed form: 129/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+35/90 30/28+70/90 30/56+35/90 90/28+35/90 30/84+35/90