Add 20/21 and 54/16
1st number: 20/21, 2nd number: 3 6/16
20/21 + 54/16 is 727/168.
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,
20/21 = 20 × 16/21 × 16 = 320/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
54/16 = 54 × 21/16 × 21 = 1134/336 - Add the two like fractions:
320/336 + 1134/336 = 320 + 1134/336 = 1454/336 - 1454/336 simplified gives 727/168
- So, 20/21 + 54/16 = 727/168
In mixed form: 455/168
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