Add 28/70 and 10/20
28/70 + 10/20 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
28/70 = 28 × 2/70 × 2 = 56/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Add the two like fractions:
56/140 + 70/140 = 56 + 70/140 = 126/140 - 126/140 simplified gives 9/10
- So, 28/70 + 10/20 = 9/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+10/20 28/70+10/40 84/70+10/20 28/70+30/20 28/70+10/60 28/70+50/20 28/70+70/20