-2 (x+1) = -2x +5 -2x+-2 = -2x+5 +2 +2 -2x=-2x+7 +2x +2x 0=7 At this point, you can see that the solution is unsolvable. Obviously, zero does not equal seven. There are zero solutions to the equation
I think that the altimeter would read as '0'. Positive readings would show that she was above sea level and negative readings we would show that she was below sea level. I hope that this helps