Add 21/84 and 72/56
1st number: 21/84, 2nd number: 1 16/56
21/84 + 72/56 is 43/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
21/84 = 21 × 2/84 × 2 = 42/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
72/56 = 72 × 3/56 × 3 = 216/168 - Add the two like fractions:
42/168 + 216/168 = 42 + 216/168 = 258/168 - 258/168 simplified gives 43/28
- So, 21/84 + 72/56 = 43/28
In mixed form: 115/28
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