Add 56/15 and 18/42, Solve 3 11/15 + 18/42 as a fraction

Add 56/15 and 18/42

1^st number: 3 11/15, 2^nd number: 18/42

56/15 + 18/42 is 437/105.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
56/15 = 56 × 14/15 × 14 = 784/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
18/42 = 18 × 5/42 × 5 = 90/210
Add the two like fractions:
784/210 + 90/210 = 784 + 90/210 = 874/210
874/210 simplified gives 437/105
So, 56/15 + 18/42 = 437/105
In mixed form: 417/105

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