Add 28/40 and 28/35
28/40 + 28/35 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 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 35 × 8 = 280,
28/35 = 28 × 8/35 × 8 = 224/280 - Add the two like fractions:
196/280 + 224/280 = 196 + 224/280 = 420/280 - 420/280 simplified gives 3/2
- So, 28/40 + 28/35 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+28/35 28/40+56/35 28/80+28/35 28/40+28/70 84/40+28/35 28/40+84/35