Solved

Solve by the Substitution Method $\begin{array} { c } x + y = 7 \\5 x + 5 y = 35\end{array}$

Question 28

Multiple Choice

Solve by the substitution method.
- $\begin{array} { c } x + y = 7 \\5 x + 5 y = 35\end{array}$

A) $( 0,0 )$
B) Infinite number of solutions
C) $( 7,5 )$
D) $( 8 , - 1 )$

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