The answer would be 11 because the x's 9 doesnt have to move because they're on the same point. If you take 7 away from -7 you get zero. Add 4 to that 7 and you get 11. Make sesnse? Hope this helped!
For this all you have to do is take the numerator and multiply it by 3 4*3=12 3 bottles contain 2.4 liters of root beer. or 3 bottles contain 12/5 liters of root beet
