Question

For the solution of the system of equations above, what is the value of ?

- -4
- -2
- 0
- 2

Hint:

**Hint:**

We are given two linear equations in two variables. To find the value

of x, we need to solve them. We need to find a way to eliminate y

and get the value of x from the equations. Here, we can do this in a

simple way: by adding the two equations together, since y can be

easily removed then. We get a linear equation in one variable which can be easily solved to get the value of x

## The correct answer is: 0

### The given equations are

First, we eliminate y by adding the equations together

Simplifying, we get

We have,

Thus, we get

As , we must have x =0 .

Thus, the correct option is C).

**Note:**

The equations can be solved in many other ways like substitution

method which is: to eliminate one variable in any one of the

equations with the help of other equation. As we need to find the

value of x, we try to find the value of y in terms of x from one

equation. Then put that value of y in the other equation to get a linear equation in one variable , which is x.

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**Note:**

Interpreting the condition given in the question and forming the equation is a crucial part of this problem.

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shown) to February. Which of the following is closest

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**Note:**

Interpreting the condition given in the question and forming the equation is a crucial part of this problem.

To find the closest value to 794.76, we need to find the difference between 794.76 and the numbers given in the options, and choose the minimum one to get the closest value