Add 90/25 and 20/21
1st number: 3 15/25, 2nd number: 20/21
90/25 + 20/21 is 478/105.
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,
90/25 = 90 × 21/25 × 21 = 1890/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
20/21 = 20 × 25/21 × 25 = 500/525 - Add the two like fractions:
1890/525 + 500/525 = 1890 + 500/525 = 2390/525 - 2390/525 simplified gives 478/105
- So, 90/25 + 20/21 = 478/105
In mixed form: 458/105
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