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Evaluate the expression for $q = 8$ . $\newline$ $-2q - 4 =$ _____

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Evaluate variable expressions involving integers

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Q. Evaluate the expression for

q = 8

.

\newline

-2q - 4 =

_____

Identify Expression: Identify the expression to evaluate. $\newline$ We need to substitute $q = 8$ into the expression $–2q − 4$ .
Substitute Value: Substitute the value of $q$ into the expression. $\newline$ Replace $q$ with $8$ in the expression to get $-2(8) - 4$ .
Multiply and Calculate: Multiply $-2$ by $8$ . $-2$ times $8$ equals $-16$ . Expression after calculation: $-16 - 4$
Subtract Result: Subtract $4$ from $-16$ . $-16$ minus $4$ equals $-20$ .

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