Add 72/18 and 18/42, Solve 4 0/18 + 18/42 as a fraction

Add 72/18 and 18/42

1^st number: 4 0/18, 2^nd number: 18/42

72/18 + 18/42 is 31/7.

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,
72/18 = 72 × 7/18 × 7 = 504/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
18/42 = 18 × 3/42 × 3 = 54/126
Add the two like fractions:
504/126 + 54/126 = 504 + 54/126 = 558/126
558/126 simplified gives 31/7
So, 72/18 + 18/42 = 31/7
In mixed form: 43/7

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