Add 8/21 and 54/16
1st number: 8/21, 2nd number: 3 6/16
8/21 + 54/16 is 631/168.
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,
8/21 = 8 × 16/21 × 16 = 128/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
54/16 = 54 × 21/16 × 21 = 1134/336 - Add the two like fractions:
128/336 + 1134/336 = 128 + 1134/336 = 1262/336 - 1262/336 simplified gives 631/168
- So, 8/21 + 54/16 = 631/168
In mixed form: 3127/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/21+54/16 8/42+54/16 8/21+54/32 24/21+54/16 8/63+54/16 8/21+54/48 40/21+54/16 8/21+54/80 56/21+54/16