Add 18/27 and 2/42
18/27 + 2/42 is 5/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
18/27 = 18 × 14/27 × 14 = 252/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
2/42 = 2 × 9/42 × 9 = 18/378 - Add the two like fractions:
252/378 + 18/378 = 252 + 18/378 = 270/378 - 270/378 simplified gives 5/7
- So, 18/27 + 2/42 = 5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/27+2/42 18/27+4/42 18/54+2/42 18/27+2/84 54/27+2/42 18/27+6/42 18/81+2/42 90/27+2/42 18/27+10/42 18/27+14/42