Add 30/28 and 80/7
1st number: 1 2/28, 2nd number: 11 3/7
30/28 + 80/7 is 25/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
30/28 = 30 × 1/28 × 1 = 30/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
80/7 = 80 × 4/7 × 4 = 320/28 - Add the two like fractions:
30/28 + 320/28 = 30 + 320/28 = 350/28 - 350/28 simplified gives 25/2
- So, 30/28 + 80/7 = 25/2
In mixed form: 121/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28+80/7 30/56+80/7 30/28+80/14 90/28+80/7 30/84+80/7 30/28+80/21 30/28+80/35 30/28+80/49