Add 8/18 and 63/42, Solve 8/18 + 1 21/42 as a fraction

Add 8/18 and 63/42

1^st number: 8/18, 2^nd number: 1 21/42

8/18 + 63/42 is 35/18.

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,
8/18 = 8 × 7/18 × 7 = 56/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
63/42 = 63 × 3/42 × 3 = 189/126
Add the two like fractions:
56/126 + 189/126 = 56 + 189/126 = 245/126
245/126 simplified gives 35/18
So, 8/18 + 63/42 = 35/18
In mixed form: 117/18

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