Add 8/21 and 30/4, Solve 8/21 + 7 2/4 as a fraction

Add 8/21 and 30/4

1^st number: 8/21, 2^nd number: 7 2/4

8/21 + 30/4 is 331/42.

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,
8/21 = 8 × 4/21 × 4 = 32/84
Likewise, for the 2nd fraction, since 4 × 21 = 84,
30/4 = 30 × 21/4 × 21 = 630/84
Add the two like fractions:
32/84 + 630/84 = 32 + 630/84 = 662/84
662/84 simplified gives 331/42
So, 8/21 + 30/4 = 331/42
In mixed form: 737/42

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