const int LEDpin1 = 7;
const int LEDpin2 = 8;
int x = 150;

void setup() {
  // put your setup code here, to run once:
/*  
  if (x > 120){
    digitalWrite(LEDpin1, HIGH);
    digitalWrite(LEDpin2, HIGH);
  } else if (x == 120){
    digitalWrite(LEDpin1, HIGH);
    digitalWrite(LEDpin2, LOW);
  } else{
    digitalWrite(LEDpin1, LOW);
    digitalWrite(LEDpin2, LOW);
  }*/
}

void loop() {
  // put your main code here, to run repeatedly:
  if (x > 120){
    digitalWrite(LEDpin1, HIGH);
    delay(500);
    digitalWrite(LEDpin1, LOW);
    digitalWrite(LEDpin2, HIGH);
    delay(500);
    digitalWrite(LEDpin2, LOW);
  }
}