Add 28/42 and 14/30
28/42 + 14/30 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
14/30 = 14 × 7/30 × 7 = 98/210 - Add the two like fractions:
140/210 + 98/210 = 140 + 98/210 = 238/210 - 238/210 simplified gives 17/15
- So, 28/42 + 14/30 = 17/15
In mixed form: 12/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+14/30 28/42+28/30 28/84+14/30 28/42+14/60 84/42+14/30 28/42+42/30 28/42+14/90 28/42+70/30 28/42+98/30