Add 81/42 and 35/15, Solve 1 39/42 + 2 5/15 as a fraction

Add 81/42 and 35/15

1^st number: 1 39/42, 2^nd number: 2 5/15

81/42 + 35/15 is 179/42.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
81/42 = 81 × 5/42 × 5 = 405/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210
Add the two like fractions:
405/210 + 490/210 = 405 + 490/210 = 895/210
895/210 simplified gives 179/42
So, 81/42 + 35/15 = 179/42
In mixed form: 411/42

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