Add 10/21 and 54/16
1st number: 10/21, 2nd number: 3 6/16
10/21 + 54/16 is 647/168.
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,
10/21 = 10 × 16/21 × 16 = 160/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
54/16 = 54 × 21/16 × 21 = 1134/336 - Add the two like fractions:
160/336 + 1134/336 = 160 + 1134/336 = 1294/336 - 1294/336 simplified gives 647/168
- So, 10/21 + 54/16 = 647/168
In mixed form: 3143/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+54/16 10/42+54/16 10/21+54/32 30/21+54/16 10/63+54/16 10/21+54/48 50/21+54/16 10/21+54/80 70/21+54/16