Add 7/30 and 15/28
7/30 + 15/28 is 323/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
7/30 = 7 × 14/30 × 14 = 98/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
15/28 = 15 × 15/28 × 15 = 225/420 - Add the two like fractions:
98/420 + 225/420 = 98 + 225/420 = 323/420 - So, 7/30 + 15/28 = 323/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+15/28 7/30+30/28 7/60+15/28 7/30+15/56 21/30+15/28 7/30+45/28 7/90+15/28 7/30+15/84 35/30+15/28 7/30+75/28 49/30+15/28