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

Add 1/42 and 18/20

1/42 + 18/20 is 97/105.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 42 × 10 = 420,
1/42 = 1 × 10/42 × 10 = 10/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
18/20 = 18 × 21/20 × 21 = 378/420
Add the two like fractions:
10/420 + 378/420 = 10 + 378/420 = 388/420
388/420 simplified gives 97/105
So, 1/42 + 18/20 = 97/105

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