Add 70/18 and 72/42, Solve 3 16/18 + 1 30/42 as a fraction

Add 70/18 and 72/42

1^st number: 3 16/18, 2^nd number: 1 30/42

70/18 + 72/42 is 353/63.

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,
70/18 = 70 × 7/18 × 7 = 490/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
72/42 = 72 × 3/42 × 3 = 216/126
Add the two like fractions:
490/126 + 216/126 = 490 + 216/126 = 706/126
706/126 simplified gives 353/63
So, 70/18 + 72/42 = 353/63
In mixed form: 538/63

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