Add 7/54 and 18/42
7/54 + 18/42 is 211/378.
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,
7/54 = 7 × 7/54 × 7 = 49/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
18/42 = 18 × 9/42 × 9 = 162/378 - Add the two like fractions:
49/378 + 162/378 = 49 + 162/378 = 211/378 - So, 7/54 + 18/42 = 211/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54+18/42 7/54+36/42 7/54+18/84 21/54+18/42 7/54+54/42 35/54+18/42 7/54+90/42 49/54+18/42