YOU WILL MAINTAIN THE X AT WHERE IS IT AND WILL BRING EQUAL SIGN AFTER THE EQUAL SIGN BRING -3 -8 AND IT WILL GIVE YOU -11 BECAUSE HAVING TWO NEGATIVE SIGNS CAN BE ADD TOGETHER.
FOR A EXAMPLE YOU OWN SOMEONE 3 APPLES AND YOU HAVE GO AND COLLECT ADDITIONAL 8 SO IT WILL BE ADDED AND YOU WILL OWN -11
