Add 81/42 and 25/15, Solve 1 39/42 + 1 10/15 as a fraction

Add 81/42 and 25/15

1^st number: 1 39/42, 2^nd number: 1 10/15

81/42 + 25/15 is 151/42.

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,
25/15 = 25 × 14/15 × 14 = 350/210
Add the two like fractions:
405/210 + 350/210 = 405 + 350/210 = 755/210
755/210 simplified gives 151/42
So, 81/42 + 25/15 = 151/42
In mixed form: 325/42

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