Add 20/25 and 9/21
20/25 + 9/21 is 43/35.
Steps for adding fractions
- 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,
20/25 = 20 × 21/25 × 21 = 420/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
9/21 = 9 × 25/21 × 25 = 225/525 - Add the two like fractions:
420/525 + 225/525 = 420 + 225/525 = 645/525 - 645/525 simplified gives 43/35
- So, 20/25 + 9/21 = 43/35
In mixed form: 18/35
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