Add 42/81 and 9/42
42/81 + 9/42 is 277/378.
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,
42/81 = 42 × 14/81 × 14 = 588/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
9/42 = 9 × 27/42 × 27 = 243/1134 - Add the two like fractions:
588/1134 + 243/1134 = 588 + 243/1134 = 831/1134 - 831/1134 simplified gives 277/378
- So, 42/81 + 9/42 = 277/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/81+9/42 42/81+18/42 42/81+9/84 42/81+27/42 42/81+45/42 42/81+63/42