Answer:
4) 5
Step-by-step explanation:
3x-x+2=12
First, you combine similar terms, so 3x-x which is 2x.
Second, you subtract 2 on both sides which is going to give you 2x=10.
Finally, you divide by 2 on both sides, so the final answer is going to be x=5.
For this case we substitute the point in each of the equations and verify if the equality is met:
Option 1:

It is not true
Option 2:

It is not true
Option 3:

Is fulfilled
Option 4:

Answer:
The point belongs to the equation of the third option.
An angle bisector divides an angle into equal parts.
<em>The value of x is 7</em>
The given parameters are:


Line AE is the angle bisector of 
This means that:

So, we have:

Divide both sides by 2

Subtract 2 from both sides

Divide both sides by 9

Rewrite as:

Hence, the value of x is 7
Read more about angle bisectors at:
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