Add 18/8 and 28/70
1st number: 2 2/8, 2nd number: 28/70
18/8 + 28/70 is 53/20.
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,
18/8 = 18 × 35/8 × 35 = 630/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
28/70 = 28 × 4/70 × 4 = 112/280 - Add the two like fractions:
630/280 + 112/280 = 630 + 112/280 = 742/280 - 742/280 simplified gives 53/20
- So, 18/8 + 28/70 = 53/20
In mixed form: 213/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+28/70 18/8+56/70 18/16+28/70 54/8+28/70 18/8+84/70 18/24+28/70 90/8+28/70 18/40+28/70 18/56+28/70