Add 21/3 and 28/56
1st number: 7 0/3, 2nd number: 28/56
21/3 + 28/56 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 3 × 56 = 168,
21/3 = 21 × 56/3 × 56 = 1176/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
28/56 = 28 × 3/56 × 3 = 84/168 - Add the two like fractions:
1176/168 + 84/168 = 1176 + 84/168 = 1260/168 - 1260/168 simplified gives 15/2
- So, 21/3 + 28/56 = 15/2
In mixed form: 71/2
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