Add 21/2 and 45/9
1st number: 10 1/2, 2nd number: 5 0/9
21/2 + 45/9 is 31/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
21/2 = 21 × 9/2 × 9 = 189/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
45/9 = 45 × 2/9 × 2 = 90/18 - Add the two like fractions:
189/18 + 90/18 = 189 + 90/18 = 279/18 - 279/18 simplified gives 31/2
- So, 21/2 + 45/9 = 31/2
In mixed form: 151/2
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