error: bad operand types for binary operator ‘<'

Hello so I am currently a beginner trying to learn Java and I keep getting this error and have no idea how to change it, this is what I get

Main.java:11: error: bad operand types for binary operator ‘<‘
System.out.println(“(2x + y/2 < z) is ” + 2 * x + y / 2 < z);
^
first type: String
second type: double
1 error

please help!!

public class Main 
{ public static void main(String[] args) { 
    double x, y, z; 
    java.util.Scanner input = new java.util.Scanner(System.in); 
    x = input.nextDouble(); 
    y = input.nextDouble(); 
    z = input.nextDouble(); 
    System.out.println("(x > y && y < z) is " + (x > y && y < z));
    System.out.println("(x > y II y < z) is " + (x > y || y < z)); 
    System.out.println("!(x >= y) is " + !(x >= y));
    System.out.println("(2x + y/2 < z) is " + 2 * x + y / 2 < z); 
    input.close(); 
} 
}