Add 30/20 and 28/70
1st number: 1 10/20, 2nd number: 28/70
30/20 + 28/70 is 19/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
28/70 = 28 × 2/70 × 2 = 56/140 - Add the two like fractions:
210/140 + 56/140 = 210 + 56/140 = 266/140 - 266/140 simplified gives 19/10
- So, 30/20 + 28/70 = 19/10
In mixed form: 19/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/20+28/70 30/20+56/70 30/40+28/70 90/20+28/70 30/20+84/70 30/60+28/70