Solve the System by Substitution $$\begin{array} { r } x + 7 y = 27 \\6 x + 7 y = 57\end{array}$$

question 137

Multiple Choice

Solve the system by substitution.
- $$\begin{array} { r } x + 7 y = 27 \\6 x + 7 y = 57\end{array}$$

• A) \(\{ ( 7,2 ) \}\)
• B) \(\{ ( 6,3 ) \}\)
• C) \(\varnothing\)
• D) \(\{ ( - 3,6 ) \}\)

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