Use elimination by substitution to find the solution for the following system.

A. x = -1, y = 6 and x = 7, y = 13
B. x = -1, y = 6 and x = 7, y = 14
C. x = -1, y = 6
D. x = -1, y = 4 and x = 7, y = 14


Answer: B

Mathematics

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Mathematics