Add 28/20 and 10/70
1st number: 1 8/20, 2nd number: 10/70
28/20 + 10/70 is 54/35.
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,
28/20 = 28 × 7/20 × 7 = 196/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
10/70 = 10 × 2/70 × 2 = 20/140 - Add the two like fractions:
196/140 + 20/140 = 196 + 20/140 = 216/140 - 216/140 simplified gives 54/35
- So, 28/20 + 10/70 = 54/35
In mixed form: 119/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/20+10/70 28/20+20/70 28/40+10/70 84/20+10/70 28/20+30/70 28/60+10/70 28/20+50/70