Find the Solution to the System of Equations by Substitution $$\begin{array} { c } 7 x + y = 0 \\- 7 x + y = - 14\end{array}$$

question 37

Multiple Choice

Find the solution to the system of equations by substitution.
- $$\begin{array} { c } 7 x + y = 0 \\- 7 x + y = - 14\end{array}$$

• A)(1, 14)
• B)(-1, 7)
• C)(1, -7)
• D)(-1, -7)

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Labor Problem

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