Add 10/25 and 80/21, Solve 10/25 + 3 17/21 as a fraction

Add 10/25 and 80/21

1^st number: 10/25, 2^nd number: 3 17/21

10/25 + 80/21 is 442/105.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 25 × 21 = 525,
10/25 = 10 × 21/25 × 21 = 210/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
80/21 = 80 × 25/21 × 25 = 2000/525
Add the two like fractions:
210/525 + 2000/525 = 210 + 2000/525 = 2210/525
2210/525 simplified gives 442/105
So, 10/25 + 80/21 = 442/105
In mixed form: 422/105

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