Add 12/21 and 21/25
12/21 + 21/25 is 247/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
12/21 = 12 × 25/21 × 25 = 300/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
21/25 = 21 × 21/25 × 21 = 441/525 - Add the two like fractions:
300/525 + 441/525 = 300 + 441/525 = 741/525 - 741/525 simplified gives 247/175
- So, 12/21 + 21/25 = 247/175
In mixed form: 172/175
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