Add 28/14 and 30/15
1st number: 2 0/14, 2nd number: 2 0/15
28/14 + 30/15 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
28/14 = 28 × 15/14 × 15 = 420/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210 - Add the two like fractions:
420/210 + 420/210 = 420 + 420/210 = 840/210 - 840/210 simplified gives 4/1
- So, 28/14 + 30/15 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+30/15 28/14+60/15 84/14+30/15 28/14+90/15 28/42+30/15 28/14+30/45 28/70+30/15 28/14+30/75 28/98+30/15