Answer: By adding, subtracting, multiplying or dividing both sides until you are left with the variable on its own. Don't multiply or divide by a variable unless you know it is always positive or always negative.
Step-by-step explanation:
Answer:
19 BUT BACK IN 2015 OR 2011 IR 2013 ITS TO BE 21 AS A JOKE IT USED TO BE VERY FUNNY LIKE WANT 9 PLUS 10 21 HAHAHAHAHAHAHAHAHA
Step-by-step explanation:
