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Which is a solution to the system of equations?
x + 3y = 18
x + 2y = 14

A) (6, 4)
B) (4, 6)
C) (6, -4)
D) (-4, 6)

Respuesta :

A.
Eqn 1 - Eqn 2:
x + 3y - (x + 2y) = 18 - 14
x + 3y - x - 2y = 4
y = 4

Substitute y = 4 into Eqn 1 (You can also do this with Eqn 2 instead)
x + 3(4) = 18
x = 6

Thus, (6,4)

Answer:

A (6,4)

Step-by-step explanation:

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