Add 28/7 and 10/20
1st number: 4 0/7, 2nd number: 10/20
28/7 + 10/20 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
28/7 = 28 × 20/7 × 20 = 560/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Add the two like fractions:
560/140 + 70/140 = 560 + 70/140 = 630/140 - 630/140 simplified gives 9/2
- So, 28/7 + 10/20 = 9/2
In mixed form: 41/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+10/20 28/14+10/20 28/7+10/40 84/7+10/20 28/7+30/20 28/21+10/20 28/7+10/60 28/7+50/20 28/35+10/20 28/7+70/20 28/49+10/20