Add 18/90 and 3/28
18/90 + 3/28 is 43/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
18/90 = 18 × 14/90 × 14 = 252/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
3/28 = 3 × 45/28 × 45 = 135/1260 - Add the two like fractions:
252/1260 + 135/1260 = 252 + 135/1260 = 387/1260 - 387/1260 simplified gives 43/140
- So, 18/90 + 3/28 = 43/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90+3/28 18/90+6/28 18/90+3/56 54/90+3/28 18/90+9/28 18/90+3/84 18/90+15/28 18/90+21/28