Add 30/42 and 81/7, Solve 30/42 + 11 4/7 as a fraction

Add 30/42 and 81/7

1^st number: 30/42, 2^nd number: 11 4/7

30/42 + 81/7 is 86/7.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
30/42 = 30 × 1/42 × 1 = 30/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
81/7 = 81 × 6/7 × 6 = 486/42
Add the two like fractions:
30/42 + 486/42 = 30 + 486/42 = 516/42
516/42 simplified gives 86/7
So, 30/42 + 81/7 = 86/7
In mixed form: 122/7

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