Add 36/21 and 15/84, Solve 1 15/21 + 15/84 as a fraction

Add 36/21 and 15/84

1^st number: 1 15/21, 2^nd number: 15/84

36/21 + 15/84 is 53/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84
Likewise, for the 2nd fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84
Add the two like fractions:
144/84 + 15/84 = 144 + 15/84 = 159/84
159/84 simplified gives 53/28
So, 36/21 + 15/84 = 53/28
In mixed form: 125/28

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