Add 28/40 and 64/10
1st number: 28/40, 2nd number: 6 4/10
28/40 + 64/10 is 71/10.
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,
64/10 = 64 × 4/10 × 4 = 256/40 - Add the two like fractions:
28/40 + 256/40 = 28 + 256/40 = 284/40 - 284/40 simplified gives 71/10
- So, 28/40 + 64/10 = 71/10
In mixed form: 71/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40+64/10 28/80+64/10 28/40+64/20 84/40+64/10 28/40+64/30 28/40+64/50 28/40+64/70