What is the value of the x variable in the solution to the following system of equations? 4x + 2y = 12 x − y = 3 a. 0 b. -3 c. 3 d. 2

ANSWER

The correct answer is C .

EXPLANATION

We have

and

.

We solve the two equation simultaneously by elimination method. We need to be smart and eliminate y, since we are looking for .

We first multiply equation (2) by 2

.

We add equation (3) and (1).

.

Dividing through by 6 gives

.

answer: c.  

step-by-step explanation:

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