Compiler can't find variable in method with for,if/else return statement

I have a method, which keeps giving me compilation errors. At first I had a return statement for the if and else statements. I couldn't get it to work with 2 return statements, so I changed it into what I have now.

The error message now says that it can't find variable 'x'. I put the return statement inside the previous set of {}, and that still never worked. So I'm not sure if I have to completely redesign my method, or if this is a simple fix.

public static boolean equalN(int [] holdN){
    for(int i=0;i<=holdN.length;i++){
        int k=1;
        boolean x;
        if(holdN[i]==holdN[k]){
            k++;
            x=true;
        }
        else{
            x=false;
        }
    }
    return x;
}