Add 20/42 and 21/18, Solve 20/42 + 1 3/18 as a fraction

Add 20/42 and 21/18

1^st number: 20/42, 2^nd number: 1 3/18

20/42 + 21/18 is 23/14.

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,
20/42 = 20 × 3/42 × 3 = 60/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
21/18 = 21 × 7/18 × 7 = 147/126
Add the two like fractions:
60/126 + 147/126 = 60 + 147/126 = 207/126
207/126 simplified gives 23/14
So, 20/42 + 21/18 = 23/14
In mixed form: 19/14

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