Add 21/12 and 6/28, Solve 1 9/12 + 6/28 as a fraction

Add 21/12 and 6/28

1^st number: 1 9/12, 2^nd number: 6/28

21/12 + 6/28 is 55/28.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
21/12 = 21 × 7/12 × 7 = 147/84
Likewise, for the 2nd fraction, since 28 × 3 = 84,
6/28 = 6 × 3/28 × 3 = 18/84
Add the two like fractions:
147/84 + 18/84 = 147 + 18/84 = 165/84
165/84 simplified gives 55/28
So, 21/12 + 6/28 = 55/28
In mixed form: 127/28

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