Add 18/42 and 54/16
1st number: 18/42, 2nd number: 3 6/16
18/42 + 54/16 is 213/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
18/42 = 18 × 8/42 × 8 = 144/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
54/16 = 54 × 21/16 × 21 = 1134/336 - Add the two like fractions:
144/336 + 1134/336 = 144 + 1134/336 = 1278/336 - 1278/336 simplified gives 213/56
- So, 18/42 + 54/16 = 213/56
In mixed form: 345/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42+54/16 18/84+54/16 18/42+54/32 54/42+54/16 18/42+54/48 90/42+54/16 18/42+54/80