Add 56/21 and 12/15, Solve 2 14/21 + 12/15 as a fraction

Add 56/21 and 12/15

1^st number: 2 14/21, 2^nd number: 12/15

56/21 + 12/15 is 52/15.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 15 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
56/21 = 56 × 5/21 × 5 = 280/105
Likewise, for the 2nd fraction, since 15 × 7 = 105,
12/15 = 12 × 7/15 × 7 = 84/105
Add the two like fractions:
280/105 + 84/105 = 280 + 84/105 = 364/105
364/105 simplified gives 52/15
So, 56/21 + 12/15 = 52/15
In mixed form: 37/15

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