Add 28/7 and 9/80
1st number: 4 0/7, 2nd number: 9/80
28/7 + 9/80 is 329/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
28/7 = 28 × 80/7 × 80 = 2240/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
9/80 = 9 × 7/80 × 7 = 63/560 - Add the two like fractions:
2240/560 + 63/560 = 2240 + 63/560 = 2303/560 - 2303/560 simplified gives 329/80
- So, 28/7 + 9/80 = 329/80
In mixed form: 49/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7+9/80 28/7+18/80 28/14+9/80 84/7+9/80 28/7+27/80 28/21+9/80 28/7+45/80 28/35+9/80 28/7+63/80 28/49+9/80