Add 15/21 and 12/25
15/21 + 12/25 is 209/175.
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,
15/21 = 15 × 25/21 × 25 = 375/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
12/25 = 12 × 21/25 × 21 = 252/525 - Add the two like fractions:
375/525 + 252/525 = 375 + 252/525 = 627/525 - 627/525 simplified gives 209/175
- So, 15/21 + 12/25 = 209/175
In mixed form: 134/175
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