Add 28/15 and 14/42, Solve 1 13/15 + 14/42 as a fraction

Add 28/15 and 14/42

1^st number: 1 13/15, 2^nd number: 14/42

28/15 + 14/42 is 11/5.

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,
28/15 = 28 × 14/15 × 14 = 392/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
14/42 = 14 × 5/42 × 5 = 70/210
Add the two like fractions:
392/210 + 70/210 = 392 + 70/210 = 462/210
462/210 simplified gives 11/5
So, 28/15 + 14/42 = 11/5
In mixed form: 21/5

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