Solve the System A) $\{ ( - 7 , - 9 ) \}$

question 429

Multiple Choice

Solve the system.
$\begin{array} { l } \frac { 9 } { x } + \frac { 1 } { y } = - \frac { 8 } { 7 } \\\frac { 4 } { x } - \frac { 1 } { y } = - \frac { 19 } { 63 }\end{array}$

• A) \(\{ ( - 7 , - 9 ) \}\)
• B) \(\{ ( 4,9 ) \}\)
• C) \(\{ ( 9,7 ) \}\)
• D) \(\{ ( - 9 , - 7 ) \}\)

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