Add 54/21 and 18/16
1st number: 2 12/21, 2nd number: 1 2/16
54/21 + 18/16 is 207/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
54/21 = 54 × 16/21 × 16 = 864/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
18/16 = 18 × 21/16 × 21 = 378/336 - Add the two like fractions:
864/336 + 378/336 = 864 + 378/336 = 1242/336 - 1242/336 simplified gives 207/56
- So, 54/21 + 18/16 = 207/56
In mixed form: 339/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21+36/16 54/42+18/16 54/21+18/32 54/21+54/16 54/63+18/16 54/21+18/48 54/21+90/16 54/21+18/80