Add 49/42 and 20/81
1st number: 1 7/42, 2nd number: 20/81
49/42 + 20/81 is 229/162.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
49/42 = 49 × 27/42 × 27 = 1323/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
20/81 = 20 × 14/81 × 14 = 280/1134 - Add the two like fractions:
1323/1134 + 280/1134 = 1323 + 280/1134 = 1603/1134 - 1603/1134 simplified gives 229/162
- So, 49/42 + 20/81 = 229/162
In mixed form: 167/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/42+20/81 49/42+40/81 49/84+20/81 49/42+60/81