Add 56/15 and 9/28, Solve 3 11/15 + 9/28 as a fraction

Add 56/15 and 9/28

1^st number: 3 11/15, 2^nd number: 9/28

56/15 + 9/28 is 1703/420.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 15 × 28 = 420,
56/15 = 56 × 28/15 × 28 = 1568/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
9/28 = 9 × 15/28 × 15 = 135/420
Add the two like fractions:
1568/420 + 135/420 = 1568 + 135/420 = 1703/420
So, 56/15 + 9/28 = 1703/420
In mixed form: 423/420

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