Add 25/42 and 81/20, Solve 25/42 + 4 1/20 as a fraction

Add 25/42 and 81/20

1^st number: 25/42, 2^nd number: 4 1/20

25/42 + 81/20 is 1951/420.

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,
25/42 = 25 × 10/42 × 10 = 250/420
Likewise, for the 2nd fraction, since 20 × 21 = 420,
81/20 = 81 × 21/20 × 21 = 1701/420
Add the two like fractions:
250/420 + 1701/420 = 250 + 1701/420 = 1951/420
So, 25/42 + 81/20 = 1951/420
In mixed form: 4271/420

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