Answer:
Option A is correct

Explanation:
Given the system of equations:
......[1]
.....[2]
Multiply equation [2] by 2 to both sides we have;
......[3]
Subtract [1] from [3] to eliminate x we have;

Combine like terms;

Substitute this in [1] we have;

Subtract 12 from both sides we have;
4x = -6
Divide both sides by 4 we get;

therefore, the solution of the given system of equations is:
