Add 4/28 and 20/18
1st number: 4/28, 2nd number: 1 2/18
4/28 + 20/18 is 79/63.
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,
4/28 = 4 × 9/28 × 9 = 36/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Add the two like fractions:
36/252 + 280/252 = 36 + 280/252 = 316/252 - 316/252 simplified gives 79/63
- So, 4/28 + 20/18 = 79/63
In mixed form: 116/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28+20/18 4/28+40/18 4/56+20/18 4/28+20/36 12/28+20/18 4/28+60/18 4/84+20/18 4/28+20/54 20/28+20/18 4/28+20/90