Add 40/28 and 15/18
1st number: 1 12/28, 2nd number: 15/18
40/28 + 15/18 is 95/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
15/18 = 15 × 14/18 × 14 = 210/252 - Add the two like fractions:
360/252 + 210/252 = 360 + 210/252 = 570/252 - 570/252 simplified gives 95/42
- So, 40/28 + 15/18 = 95/42
In mixed form: 211/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+15/18 40/28+30/18 40/56+15/18 40/28+15/36 40/28+45/18 40/84+15/18 40/28+15/54 40/28+75/18 40/28+15/90