Add 28/8 and 20/70
1st number: 3 4/8, 2nd number: 20/70
28/8 + 20/70 is 53/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
28/8 = 28 × 35/8 × 35 = 980/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
20/70 = 20 × 4/70 × 4 = 80/280 - Add the two like fractions:
980/280 + 80/280 = 980 + 80/280 = 1060/280 - 1060/280 simplified gives 53/14
- So, 28/8 + 20/70 = 53/14
In mixed form: 311/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8+20/70 28/8+40/70 28/16+20/70 84/8+20/70 28/8+60/70 28/24+20/70 28/40+20/70 28/56+20/70