Add 18/28 and 27/35
18/28 + 27/35 is 99/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
18/28 = 18 × 5/28 × 5 = 90/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
27/35 = 27 × 4/35 × 4 = 108/140 - Add the two like fractions:
90/140 + 108/140 = 90 + 108/140 = 198/140 - 198/140 simplified gives 99/70
- So, 18/28 + 27/35 = 99/70
In mixed form: 129/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+27/35 18/28+54/35 18/56+27/35 18/28+27/70 54/28+27/35 18/28+81/35 18/84+27/35 90/28+27/35