Add 35/42 and 5/81
35/42 + 5/81 is 145/162.
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,
35/42 = 35 × 27/42 × 27 = 945/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
5/81 = 5 × 14/81 × 14 = 70/1134 - Add the two like fractions:
945/1134 + 70/1134 = 945 + 70/1134 = 1015/1134 - 1015/1134 simplified gives 145/162
- So, 35/42 + 5/81 = 145/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42+5/81 35/42+10/81 35/84+5/81 35/42+15/81 35/42+25/81 35/42+35/81