\(x=3\) or \(x=-1\)
If \(x=3\), then \(y=2x-2=4\) and \(z=2x=6\)
If \(x=-1\), then \(y=2x-2=-4\) and \(z=2x=-2\)
If (1) is true, then the only possible x is 3, and the result is divisible by 7.
If (2) is true, then the only possible x is 3, and the result is again divisible by 7.
So, the answer is (D)
If my post is useful for you not be ashamed to KUDO me!
Let kudo each other!