Add 6/21 and 7/4, Solve 6/21 + 1 3/4 as a fraction

Add 6/21 and 7/4

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

6/21 + 7/4 is 57/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
6/21 = 6 × 4/21 × 4 = 24/84
Likewise, for the 2nd fraction, since 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84
Add the two like fractions:
24/84 + 147/84 = 24 + 147/84 = 171/84
171/84 simplified gives 57/28
So, 6/21 + 7/4 = 57/28
In mixed form: 21/28

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