Solve the system of equations by substitution.

3x + 4y = 31

2x - 4y = - 6

A. (4, 5)

B. (5, 4)

C. (-5, 12.5)

D. (5, - 4)

State a conclusion that seems reasonable. 6+0 6,8+0-8, 9+O = 9, 100+0=100. Conclusion:

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