Add 20/21 and 40/25
1st number: 20/21, 2nd number: 1 15/25
20/21 + 40/25 is 268/105.
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,
20/21 = 20 × 25/21 × 25 = 500/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
40/25 = 40 × 21/25 × 21 = 840/525 - Add the two like fractions:
500/525 + 840/525 = 500 + 840/525 = 1340/525 - 1340/525 simplified gives 268/105
- So, 20/21 + 40/25 = 268/105
In mixed form: 258/105
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