Add 15/14 and 30/20
1st number: 1 1/14, 2nd number: 1 10/20
15/14 + 30/20 is 18/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
15/14 = 15 × 10/14 × 10 = 150/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
150/140 + 210/140 = 150 + 210/140 = 360/140 - 360/140 simplified gives 18/7
- So, 15/14 + 30/20 = 18/7
In mixed form: 24/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/14+30/20 15/14+60/20 15/28+30/20 15/14+30/40 45/14+30/20 15/14+90/20 15/42+30/20 15/14+30/60 75/14+30/20 15/70+30/20 15/98+30/20