Solve the system by solving one of the equations for x or y and then use the substitution method. 
If the system is dependent or inconsistent , or if there is no solution , indicate this.
Correct Answer:
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Q77: Solve the system by solving one of
Q78: Solve the system using the substitution method.
Q79: Solve the system by solving one of
Q80: Solve the system by solving one of
Q81: Solve the system by solving one of
Q83: Solve the system by solving one of
Q84: Solve the system by solving one of
Q85: The difference of two numbers is
Q86: One number is Q87: The sum of two numbers is 
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