Add 28/14 and 40/20
1st number: 2 0/14, 2nd number: 2 0/20
28/14 + 40/20 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
28/14 = 28 × 10/14 × 10 = 280/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
40/20 = 40 × 7/20 × 7 = 280/140 - Add the two like fractions:
280/140 + 280/140 = 280 + 280/140 = 560/140 - 560/140 simplified gives 4/1
- So, 28/14 + 40/20 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14+40/20 28/14+80/20 84/14+40/20 28/42+40/20 28/14+40/60 28/70+40/20 28/98+40/20