Add 12/56 and 28/21, Solve 12/56 + 1 7/21 as a fraction

Add 12/56 and 28/21

1^st number: 12/56, 2^nd number: 1 7/21

12/56 + 28/21 is 65/42.

Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 56 × 3 = 168,
12/56 = 12 × 3/56 × 3 = 36/168
Likewise, for the 2nd fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168
Add the two like fractions:
36/168 + 224/168 = 36 + 224/168 = 260/168
260/168 simplified gives 65/42
So, 12/56 + 28/21 = 65/42
In mixed form: 123/42

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