Questions: Simplifying Expressions
Simplify the expressions completely.
5-(x+8)
5-2(4x+9)
8(x+5)+3x
Transcript text: Simplifying Expressions
Simplify the expressions completely.
\[
\begin{array}{l}
5-(x+8) \\
5-2(4 x+9) \\
8(x+5)+3 x
\end{array}
\]
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Solution
Solution Steps
To simplify the given expressions, we will apply the distributive property and combine like terms. For each expression, distribute any coefficients and then combine any terms that are similar.
Step 1: Simplify the First Expression
The first expression is \(5 - (x + 8)\). To simplify, distribute the negative sign across the terms inside the parentheses:
\[
5 - (x + 8) = 5 - x - 8
\]
Combine like terms:
\[
5 - 8 - x = -x - 3
\]
Step 2: Simplify the Second Expression
The second expression is \(5 - 2(4x + 9)\). First, distribute the \(-2\) across the terms inside the parentheses:
\[
5 - 2(4x + 9) = 5 - 8x - 18
\]
Combine like terms:
\[
5 - 18 - 8x = -8x - 13
\]
Step 3: Simplify the Third Expression
The third expression is \(8(x + 5) + 3x\). Distribute the \(8\) across the terms inside the parentheses:
\[
8(x + 5) + 3x = 8x + 40 + 3x
\]
Combine like terms:
\[
8x + 3x + 40 = 11x + 40
\]