Add 21/9 and 20/45
1st number: 2 3/9, 2nd number: 20/45
21/9 + 20/45 is 25/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
21/9 = 21 × 5/9 × 5 = 105/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
20/45 = 20 × 1/45 × 1 = 20/45 - Add the two like fractions:
105/45 + 20/45 = 105 + 20/45 = 125/45 - 125/45 simplified gives 25/9
- So, 21/9 + 20/45 = 25/9
In mixed form: 27/9
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