Add 28/70 and 90/7
1st number: 28/70, 2nd number: 12 6/7
28/70 + 90/7 is 464/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
28/70 = 28 × 1/70 × 1 = 28/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70 - Add the two like fractions:
28/70 + 900/70 = 28 + 900/70 = 928/70 - 928/70 simplified gives 464/35
- So, 28/70 + 90/7 = 464/35
In mixed form: 139/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/70+90/7 28/70+90/14 84/70+90/7 28/70+90/21 28/70+90/35 28/70+90/49