Add 21/2 and 45/5, Solve 10 1/2 + 9 0/5 as a fraction

Add 21/2 and 45/5

1^st number: 10 1/2, 2^nd number: 9 0/5

21/2 + 45/5 is 39/2.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10

Next, find the equivalent fraction of both fractional numbers with denominator 10
For the 1st fraction, since 2 × 5 = 10,
21/2 = 21 × 5/2 × 5 = 105/10
Likewise, for the 2nd fraction, since 5 × 2 = 10,
45/5 = 45 × 2/5 × 2 = 90/10
Add the two like fractions:
105/10 + 90/10 = 105 + 90/10 = 195/10
195/10 simplified gives 39/2
So, 21/2 + 45/5 = 39/2
In mixed form: 191/2

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