Add 25/10 and 8/21, Solve 2 5/10 + 8/21 as a fraction

Add 25/10 and 8/21

1^st number: 2 5/10, 2^nd number: 8/21

25/10 + 8/21 is 121/42.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
25/10 = 25 × 21/10 × 21 = 525/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
8/21 = 8 × 10/21 × 10 = 80/210
Add the two like fractions:
525/210 + 80/210 = 525 + 80/210 = 605/210
605/210 simplified gives 121/42
So, 25/10 + 8/21 = 121/42
In mixed form: 237/42

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