Add 20/28 and 2/40
20/28 + 2/40 is 107/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
20/28 = 20 × 10/28 × 10 = 200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
2/40 = 2 × 7/40 × 7 = 14/280 - Add the two like fractions:
200/280 + 14/280 = 200 + 14/280 = 214/280 - 214/280 simplified gives 107/140
- So, 20/28 + 2/40 = 107/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+2/40 20/28+4/40 20/56+2/40 20/28+2/80 60/28+2/40 20/28+6/40 20/84+2/40 20/28+10/40 20/28+14/40