Ax+B=0_OOP_Java
import java.util.Scanner;
public class Bac1 {
float a, b;
Bac1(){
a =b = 0;
}
Bac1(float x, float y){
a = x; b = y;
}
public void nhap(){
System.out.print("nhap a");
Scanner kb = new Scanner(System.in);
a = kb.nextFloat();
System.out.print("nhap b");
b = kb.nextFloat();
}
public void giai(){
if(a==0)
if(b==0)
System.out.print("vo so nghiem ");
else
System.out.print(" vo nghiem");
else System.out.print(" x = "+ -b/a);
}
}