Add 28/40 and 3/70
28/40 + 3/70 is 26/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
28/40 = 28 × 7/40 × 7 = 196/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
3/70 = 3 × 4/70 × 4 = 12/280 - Add the two like fractions:
196/280 + 12/280 = 196 + 12/280 = 208/280 - 208/280 simplified gives 26/35
- So, 28/40 + 3/70 = 26/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+3/70 28/40+6/70 28/80+3/70 84/40+3/70 28/40+9/70 28/40+15/70 28/40+21/70