Add 5/42 and 21/18, Solve 5/42 + 1 3/18 as a fraction

Add 5/42 and 21/18

1^st number: 5/42, 2^nd number: 1 3/18

5/42 + 21/18 is 9/7.

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

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
5/42 = 5 × 3/42 × 3 = 15/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126
Add the two like fractions:
15/126 + 147/126 = 15 + 147/126 = 162/126
162/126 simplified gives 9/7
So, 5/42 + 21/18 = 9/7
In mixed form: 12/7

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