Add 28/10 and 40/7
1st number: 2 8/10, 2nd number: 5 5/7
28/10 + 40/7 is 298/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
28/10 = 28 × 7/10 × 7 = 196/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
40/7 = 40 × 10/7 × 10 = 400/70 - Add the two like fractions:
196/70 + 400/70 = 196 + 400/70 = 596/70 - 596/70 simplified gives 298/35
- So, 28/10 + 40/7 = 298/35
In mixed form: 818/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+40/7 28/10+80/7 28/20+40/7 28/10+40/14 84/10+40/7 28/30+40/7 28/10+40/21 28/50+40/7 28/10+40/35 28/70+40/7 28/10+40/49