Add 21/25 and 7/21, Solve 21/25 + 7/21 as a fraction

Add 21/25 and 7/21

21/25 + 7/21 is 88/75.

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,
21/25 = 21 × 21/25 × 21 = 441/525
Likewise, for the 2nd fraction, since 21 × 25 = 525,
7/21 = 7 × 25/21 × 25 = 175/525
Add the two like fractions:
441/525 + 175/525 = 441 + 175/525 = 616/525
616/525 simplified gives 88/75
So, 21/25 + 7/21 = 88/75
In mixed form: 113/75

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