Add 10/21 and 8/4, Solve 10/21 + 2 0/4 as a fraction

Add 10/21 and 8/4

1^st number: 10/21, 2^nd number: 2 0/4

10/21 + 8/4 is 52/21.

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,
10/21 = 10 × 4/21 × 4 = 40/84
Likewise, for the 2nd fraction, since 4 × 21 = 84,
8/4 = 8 × 21/4 × 21 = 168/84
Add the two like fractions:
40/84 + 168/84 = 40 + 168/84 = 208/84
208/84 simplified gives 52/21
So, 10/21 + 8/4 = 52/21
In mixed form: 210/21

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