Add 7/2 and 28/80
1st number: 3 1/2, 2nd number: 28/80
7/2 + 28/80 is 77/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 2 × 40 = 80,
7/2 = 7 × 40/2 × 40 = 280/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
28/80 = 28 × 1/80 × 1 = 28/80 - Add the two like fractions:
280/80 + 28/80 = 280 + 28/80 = 308/80 - 308/80 simplified gives 77/20
- So, 7/2 + 28/80 = 77/20
In mixed form: 317/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/2+28/80 7/2+56/80 7/4+28/80 21/2+28/80 7/2+84/80 7/6+28/80 35/2+28/80 7/10+28/80 49/2+28/80 7/14+28/80