Math Question
![Add the equations. What value belongs in the green box?
\[
\begin{array}{r}
-2 x+4 y=15 \\
+-12 x-4 y=-8 \\
\hline[?]+[]=[]
\end{array}
\]
A. \( -14 x \)
B. \( -10 x \)
C. \( 10 x \)
D. \( -12 x \)](https://d3hlidq5bf9vg0.cloudfront.net/app-server-student/2022/4/19/250def68-9696-43f5-9d2e-5d519089efcf.png "Add the equations. What value belongs in the green box?
\[
\begin{array}{r}
-2 x+4 y=15 \\
+-12 x-4 y=-8 \\
\hline[?]+[]=[]
\end{array}
\]
A. \( -14 x \)
B. \( -10 x \)
C. \( 10 x \)
D. \( -12 x \)")
Solution
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