Multiple Choice
Use the method of substitution to solve the system. 
A) ( - 4, -21 )
B) ( - 4, -21 ) , ( 9, 44 )
C) ( - 4, -21 ) , ( 8, 44 )
D) ( 9, 44 )
E) no solution
Correct Answer:
Verified
Correct Answer:
Verified
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