Add 25/8 and 28/70
1st number: 3 1/8, 2nd number: 28/70
25/8 + 28/70 is 141/40.
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,
25/8 = 25 × 35/8 × 35 = 875/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
28/70 = 28 × 4/70 × 4 = 112/280 - Add the two like fractions:
875/280 + 112/280 = 875 + 112/280 = 987/280 - 987/280 simplified gives 141/40
- So, 25/8 + 28/70 = 141/40
In mixed form: 321/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/8+28/70 25/8+56/70 25/16+28/70 75/8+28/70 25/8+84/70 25/24+28/70 25/40+28/70 25/56+28/70