Add 81/42 and 21/49, Solve 1 39/42 + 21/49 as a fraction

Add 81/42 and 21/49

1^st number: 1 39/42, 2^nd number: 21/49

81/42 + 21/49 is 33/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 42 × 7 = 294,
81/42 = 81 × 7/42 × 7 = 567/294
Likewise, for the 2nd fraction, since 49 × 6 = 294,
21/49 = 21 × 6/49 × 6 = 126/294
Add the two like fractions:
567/294 + 126/294 = 567 + 126/294 = 693/294
693/294 simplified gives 33/14
So, 81/42 + 21/49 = 33/14
In mixed form: 25/14

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