Add 1/21 and 14/4, Solve 1/21 + 3 2/4 as a fraction

Add 1/21 and 14/4

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

1/21 + 14/4 is 149/42.

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,
1/21 = 1 × 4/21 × 4 = 4/84
Likewise, for the 2nd fraction, since 4 × 21 = 84,
14/4 = 14 × 21/4 × 21 = 294/84
Add the two like fractions:
4/84 + 294/84 = 4 + 294/84 = 298/84
298/84 simplified gives 149/42
So, 1/21 + 14/4 = 149/42
In mixed form: 323/42

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