Add 25/20 and 30/42, Solve 1 5/20 + 30/42 as a fraction

Add 25/20 and 30/42

1^st number: 1 5/20, 2^nd number: 30/42

25/20 + 30/42 is 55/28.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 20 × 21 = 420,
25/20 = 25 × 21/20 × 21 = 525/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
30/42 = 30 × 10/42 × 10 = 300/420
Add the two like fractions:
525/420 + 300/420 = 525 + 300/420 = 825/420
825/420 simplified gives 55/28
So, 25/20 + 30/42 = 55/28
In mixed form: 127/28

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