Add 18/28 and 42/48
18/28 + 42/48 is 85/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 28 × 12 = 336,
18/28 = 18 × 12/28 × 12 = 216/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336 - Add the two like fractions:
216/336 + 294/336 = 216 + 294/336 = 510/336 - 510/336 simplified gives 85/56
- So, 18/28 + 42/48 = 85/56
In mixed form: 129/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+42/48 18/28+84/48 18/56+42/48 18/28+42/96 54/28+42/48 18/84+42/48 90/28+42/48