Add 28/70 and 5/3
1st number: 28/70, 2nd number: 1 2/3
28/70 + 5/3 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
28/70 = 28 × 3/70 × 3 = 84/210 - Likewise, for the 2nd fraction, since 3 × 70 = 210,
5/3 = 5 × 70/3 × 70 = 350/210 - Add the two like fractions:
84/210 + 350/210 = 84 + 350/210 = 434/210 - 434/210 simplified gives 31/15
- So, 28/70 + 5/3 = 31/15
In mixed form: 21/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+5/3 28/70+10/3 28/70+5/6 84/70+5/3 28/70+15/3 28/70+5/9 28/70+25/3 28/70+5/15 28/70+35/3 28/70+5/21