Add 28/2 and 40/7
1st number: 14 0/2, 2nd number: 5 5/7
28/2 + 40/7 is 138/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
28/2 = 28 × 7/2 × 7 = 196/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
40/7 = 40 × 2/7 × 2 = 80/14 - Add the two like fractions:
196/14 + 80/14 = 196 + 80/14 = 276/14 - 276/14 simplified gives 138/7
- So, 28/2 + 40/7 = 138/7
In mixed form: 195/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/2+40/7 28/2+80/7 28/4+40/7 28/2+40/14 84/2+40/7 28/6+40/7 28/2+40/21 28/10+40/7 28/2+40/35 28/14+40/7 28/2+40/49