Add 5/42 and 10/81
5/42 + 10/81 is 275/1134.
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,
5/42 = 5 × 27/42 × 27 = 135/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
10/81 = 10 × 14/81 × 14 = 140/1134 - Add the two like fractions:
135/1134 + 140/1134 = 135 + 140/1134 = 275/1134 - So, 5/42 + 10/81 = 275/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+10/81 5/42+20/81 5/84+10/81 15/42+10/81 5/42+30/81 25/42+10/81 5/42+50/81 35/42+10/81 5/42+70/81