Add 18/28 and 84/8
1st number: 18/28, 2nd number: 10 4/8
18/28 + 84/8 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
18/28 = 18 × 2/28 × 2 = 36/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
84/8 = 84 × 7/8 × 7 = 588/56 - Add the two like fractions:
36/56 + 588/56 = 36 + 588/56 = 624/56 - 624/56 simplified gives 78/7
- So, 18/28 + 84/8 = 78/7
In mixed form: 111/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+84/8 18/56+84/8 18/28+84/16 54/28+84/8 18/84+84/8 18/28+84/24 90/28+84/8 18/28+84/40 18/28+84/56