Answer :

To express a given decimal number as a fraction, we need to follow a few simple steps. Let's take the decimal number 10.5 as an example.

1. Identify the decimal part: The decimal number is 10.5.

2. Eliminate the decimal by multiplying: To get rid of the decimal point, we multiply by 10 (since there is one digit after the decimal point).

[tex]\[ 10.5 \times 10 = 105 \][/tex]

3. Determine the corresponding denominator: Since we multiplied by 10 to get rid of the decimal, our denominator will be 10.

So, we can express the decimal number 10.5 as the fraction:

[tex]\[ \frac{105}{10} \][/tex]

Therefore, the fraction representation is:

[tex]\[ (p, q) = (105, 10) \][/tex]

Thus, the decimal 10.5 in fraction form is [tex]\( \frac{105}{10} \)[/tex].