Solve the system of equations using substitution.

A. x = 2, y = 30 or (2, 30)
B. x = 7, y = 25; x = -4, y = 36
or (7, 25), (-4, 36)
C. x = 7, y = 39; x = -4, y = 36
or (7, 39), (-4, 36)
D. x = -7, y = 39; x = 4, y = 28
or (-7, 39), (4, 28)


Answer: B

Mathematics

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