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2. Eliminate the y in the following system of equations. What is the result when you add the two equations?
3x - 2y = 8
x + y = 6

A. 5x = 14
B. 5x = 20
C. 4x = 14
D. x = -4

Respuesta :

Answer:

B

Step-by-step explanation:

3x - 2y = 8 → (1)

x + y = 6 → (2)

Multiplying (2) by 2 and adding to (1) will eliminate y

2x + 2y = 12 → (3)

Add (1) and (3) term by term to eliminate y

(3x + 2x) + (- 2y + 2y) = (8 + 12) , that is

5x + 0 = 20

5x = 20 → B

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