It's actually (-9)... think of it as a hot air balloon, the positivies being balloons and the negatives being sandbags or weights. You have 7 sandbags/weights and add 9 more sandbags/weights, causing u to go lower, therefore, *negative* 9 Hope that helped! :))
-9 If you look at a number line, then if you put your finger on negative 2 and subtract 7, then you will land on -9. Also the equation is the same as -7-2 which equals -9
