Add 27/54 and 4/42
27/54 + 4/42 is 25/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
27/54 = 27 × 7/54 × 7 = 189/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
4/42 = 4 × 9/42 × 9 = 36/378 - Add the two like fractions:
189/378 + 36/378 = 189 + 36/378 = 225/378 - 225/378 simplified gives 25/42
- So, 27/54 + 4/42 = 25/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 27/54+8/42 27/54+4/84 81/54+4/42 27/54+12/42 27/54+20/42 27/54+28/42