Add 20/42 and 35/27
1st number: 20/42, 2nd number: 1 8/27
20/42 + 35/27 is 335/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
20/42 = 20 × 9/42 × 9 = 180/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
35/27 = 35 × 14/27 × 14 = 490/378 - Add the two like fractions:
180/378 + 490/378 = 180 + 490/378 = 670/378 - 670/378 simplified gives 335/189
- So, 20/42 + 35/27 = 335/189
In mixed form: 1146/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42+35/27 20/42+70/27 20/84+35/27 20/42+35/54 60/42+35/27 20/42+35/81