Add 8/42 and 9/27
8/42 + 9/27 is 11/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
8/42 = 8 × 9/42 × 9 = 72/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
9/27 = 9 × 14/27 × 14 = 126/378 - Add the two like fractions:
72/378 + 126/378 = 72 + 126/378 = 198/378 - 198/378 simplified gives 11/21
- So, 8/42 + 9/27 = 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/42+9/27 8/42+18/27 8/84+9/27 8/42+9/54 24/42+9/27 8/42+9/81 40/42+9/27 8/42+45/27 56/42+9/27 8/42+63/27