#define redpin 9          //defing "redpin" as being controlled by analog pin 9
#define bringt  50        //Define voltage on analog pin 9 as 50/255????
int waitT=750;            //Define delay time 
int x =3;                 //Declare new int varialbe with starting value =3
int y=7;                  //Declare new int variable with starting value =7
int z;                    //Declare new int variable z 



void setup() {
  // put your setup code here, to run once:
Serial.begin (9600);      //define communication rate 9600 baud
pinMode(redpin, OUTPUT);  //define "redpin" on analog 9 as an output pin 

}

void loop() {
  // put your main code here, to run repeatedly:

  analogWrite(redpin, bringt);  //apply voltage to pin 9 defined 

Serial.print (x);         //print the value stored as the intefer "X"
Serial.print ("+");       //pring exactly what is contained in the quotes 
Serial.print (y);         //print the value stored as the integer "y"
Serial.print ("=");       //print exactly what is contained in the quotes
z = x +y;                 //assign a value to z. z will be equeal to x+y
Serial.println (z);       //print the value of z and move to a new line 

delay (waitT);            //wait 750 milliseconds before proceeding with the loop
x= x+2;                   //update value of x as a the old value of x x+2
y=y+2;                    //update the value of y as the old value +2
                          //end of loop program returns to the first loop instruction
}