Add 3/42 and 63/20, Solve 3/42 + 3 3/20 as a fraction

Add 3/42 and 63/20

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

3/42 + 63/20 is 451/140.

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,
3/42 = 3 × 10/42 × 10 = 30/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
63/20 = 63 × 21/20 × 21 = 1323/420
Add the two like fractions:
30/420 + 1323/420 = 30 + 1323/420 = 1353/420
1353/420 simplified gives 451/140
So, 3/42 + 63/20 = 451/140
In mixed form: 331/140

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