Add 4/81 and 25/42
4/81 + 25/42 is 731/1134.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
4/81 = 4 × 14/81 × 14 = 56/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
25/42 = 25 × 27/42 × 27 = 675/1134 - Add the two like fractions:
56/1134 + 675/1134 = 56 + 675/1134 = 731/1134 - So, 4/81 + 25/42 = 731/1134
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/81+25/42 4/81+50/42 4/81+25/84 12/81+25/42 4/81+75/42 20/81+25/42 28/81+25/42