Answer :

Certainly! Let's solve the expression [tex]\(15(x - y)\)[/tex] step-by-step when [tex]\(x = 9\)[/tex] and [tex]\(y = 20\)[/tex].

1. Identify the values of [tex]\(x\)[/tex] and [tex]\(y\)[/tex]:
- [tex]\(x = 9\)[/tex]
- [tex]\(y = 20\)[/tex]

2. Substitute these values into the expression [tex]\(15(x - y)\)[/tex]:

[tex]\[ 15(9 - 20) \][/tex]

3. Calculate the difference inside the parentheses:

[tex]\[ 9 - 20 = -11 \][/tex]

4. Now, multiply 15 by the result of the difference:

[tex]\[ 15 \times (-11) = -165 \][/tex]

Therefore, the value of the expression [tex]\(15(x - y)\)[/tex] when [tex]\(x = 9\)[/tex] and [tex]\(y = 20\)[/tex] is [tex]\(-165\)[/tex].