Simplify:

Simplify: 8(−9 − 5x) + 4b use x = 9 and b = −9

Correct answer:

s =  -468

Step-by-step explanation:

$$\begin{gathered} x=9 \\ b=-9 \\ s=8\cdot (-9-5\cdot x)+4\cdot b=8\cdot (-9-5\cdot 9)+4\cdot (-9)=-468 \end{gathered}$$

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