Add 84/16 and 28/21
1st number: 5 4/16, 2nd number: 1 7/21
84/16 + 28/21 is 79/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 21 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
84/16 = 84 × 21/16 × 21 = 1764/336 - Likewise, for the 2nd fraction, since 21 × 16 = 336,
28/21 = 28 × 16/21 × 16 = 448/336 - Add the two like fractions:
1764/336 + 448/336 = 1764 + 448/336 = 2212/336 - 2212/336 simplified gives 79/12
- So, 84/16 + 28/21 = 79/12
In mixed form: 67/12
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