Subtract the following with the help of numberline:
(−2)−7.
Let subtract (−2)−7
Step-1 Rewrite as an addition problem
⇒(−2)−7=−2−7
Step-2 Start at the first number in the addition problem, in this case -2
Step-3 Move 7 place to the left.We move 7 to the left because adding negative 7 decrease our number by 7
-2+5 takes us to 1 on the number line
⇒(−2)−7=−9