Add 15/14 and 72/42, Solve 1 1/14 + 1 30/42 as a fraction

Add 15/14 and 72/42

1^st number: 1 1/14, 2^nd number: 1 30/42

15/14 + 72/42 is 39/14.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
15/14 = 15 × 3/14 × 3 = 45/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42
Add the two like fractions:
45/42 + 72/42 = 45 + 72/42 = 117/42
117/42 simplified gives 39/14
So, 15/14 + 72/42 = 39/14
In mixed form: 211/14

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