Add 3/4 and 27/21, Solve 3/4 + 1 6/21 as a fraction

Add 3/4 and 27/21

1^st number: 3/4, 2^nd number: 1 6/21

3/4 + 27/21 is 57/28.

Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 4 × 21 = 84,
3/4 = 3 × 21/4 × 21 = 63/84
Likewise, for the 2nd fraction, since 21 × 4 = 84,
27/21 = 27 × 4/21 × 4 = 108/84
Add the two like fractions:
63/84 + 108/84 = 63 + 108/84 = 171/84
171/84 simplified gives 57/28
So, 3/4 + 27/21 = 57/28
In mixed form: 21/28

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