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36 votes
36 votes
Find the value of (x-7) for 2(x+4) - 3x =17

User Denis  Starkov
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1 Answer

19 votes
19 votes

First we must solve for x:


\begin{gathered} 2(x+4)-3x=17 \\ \Rightarrow2x+8-3x=17 \\ \Rightarrow-x=17-8=9 \\ \Rightarrow x=-9 \end{gathered}

Now, since x=-9, we just have to find the value of x-7:


\begin{gathered} x=-9 \\ \Rightarrow x-7=-9-7=-16 \end{gathered}

Therefore, x-7=-16

User Dogahe
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