Add 21/16 and 54/42
1st number: 1 5/16, 2nd number: 1 12/42
21/16 + 54/42 is 291/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
54/42 = 54 × 8/42 × 8 = 432/336 - Add the two like fractions:
441/336 + 432/336 = 441 + 432/336 = 873/336 - 873/336 simplified gives 291/112
- So, 21/16 + 54/42 = 291/112
In mixed form: 267/112
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