Add 27/42 and 2/20
27/42 + 2/20 is 26/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
27/42 = 27 × 10/42 × 10 = 270/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
2/20 = 2 × 21/20 × 21 = 42/420 - Add the two like fractions:
270/420 + 42/420 = 270 + 42/420 = 312/420 - 312/420 simplified gives 26/35
- So, 27/42 + 2/20 = 26/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42+2/20 27/42+4/20 27/84+2/20 27/42+2/40 81/42+2/20 27/42+6/20 27/42+2/60 27/42+10/20 27/42+14/20