Add 81/18 and 30/42, Solve 4 9/18 + 30/42 as a fraction

Add 81/18 and 30/42

1^st number: 4 9/18, 2^nd number: 30/42

81/18 + 30/42 is 73/14.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
30/42 = 30 × 3/42 × 3 = 90/126
Add the two like fractions:
567/126 + 90/126 = 567 + 90/126 = 657/126
657/126 simplified gives 73/14
So, 81/18 + 30/42 = 73/14
In mixed form: 53/14

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