My sister is 9 1/2 years old my brother is 4 3/4 years younger than my sister how old is my brother show me how to get the answer
9.5 - 4.75 = ?
To find out how old your brother is, we need to calculate the age difference between your sister and your brother.
First, let's convert your sister's age to a mixed fraction: 9 1/2 = 19/2.
Next, we subtract your brother's age from your sister's age:
19/2 - 4 3/4
To subtract fractions, we need to have a common denominator. The common denominator between 2 and 4 is 4.
Converting 19/2 to an equivalent fraction with 4 as the denominator:
19/2 = 19/2 * 2/2 = 38/4
Now, the subtraction becomes:
38/4 - 4 3/4
Remember that when subtracting fractions, we keep the denominator the same:
(38 - 4)/4 - 3/4
Simplifying the subtraction:
34/4 - 3/4
Now we can subtract the numerators and keep the denominator the same:
(34 - 3)/4 = 31/4
Therefore, your brother is 31/4 years old.
To convert this mixed fraction to a whole number, we need to divide the numerator (31) by the denominator (4):
31 ÷ 4 = 7 remainder 3
This means your brother is 7 and 3/4 years old.
So, to summarize, your brother is 7 and 3/4 years old.