How do I debug this?

Question

// This application displays some math facts
public class DebugThree2
{
public static void main(String args[])
{
int a = 2, b = 5, c = 10;
add(a, b);
add(b, c);
subtract(c, a);
}
public static void add(int a, b)
{
System.out.println("The sum of " + a +
" and " + a + " is " + (a + b));
}
public static void subtract(int a, b)
{
System.out.println("The difference between +
a + " and " + b + " is " + (a * b));
}
}

Answer 1

Didn't specify the type of argument b:
public static void add(int a, b)
public static void subtract(int a, b)

Didn't close quotes:
System.out.println("The difference between 👈+
a + " and " + b + " is " + (a * b));