Add 28/40 and 3/10
28/40 + 3/10 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
3/10 = 3 × 4/10 × 4 = 12/40 - Add the two like fractions:
28/40 + 12/40 = 28 + 12/40 = 40/40 - 40/40 simplified gives 1/1
- So, 28/40 + 3/10 = 1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+3/10 28/40+6/10 28/80+3/10 28/40+3/20 84/40+3/10 28/40+9/10 28/40+3/30 28/40+15/10 28/40+3/50 28/40+21/10 28/40+3/70