Add 21/12 and 4/56, Solve 1 9/12 + 4/56 as a fraction

Add 21/12 and 4/56

1^st number: 1 9/12, 2^nd number: 4/56

21/12 + 4/56 is 51/28.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 56 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 12 × 14 = 168,
21/12 = 21 × 14/12 × 14 = 294/168
Likewise, for the 2nd fraction, since 56 × 3 = 168,
4/56 = 4 × 3/56 × 3 = 12/168
Add the two like fractions:
294/168 + 12/168 = 294 + 12/168 = 306/168
306/168 simplified gives 51/28
So, 21/12 + 4/56 = 51/28
In mixed form: 123/28

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