Add 28/30 and 7/15
28/30 + 7/15 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
28/30 = 28 × 1/30 × 1 = 28/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
7/15 = 7 × 2/15 × 2 = 14/30 - Add the two like fractions:
28/30 + 14/30 = 28 + 14/30 = 42/30 - 42/30 simplified gives 7/5
- So, 28/30 + 7/15 = 7/5
In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30+7/15 28/30+14/15 28/60+7/15 28/30+7/30 84/30+7/15 28/30+21/15 28/90+7/15 28/30+7/45 28/30+35/15 28/30+7/75 28/30+49/15