Question

Which number line represents the solution of (-2) + (-3) - (-7)?

• A.
• B.
• C.
• D.

Answer 1

The correct option is A

In a number line,
(i)Adding a positive integer $\Rightarrow$ move towards right
(ii)Adding a negative integer $\Rightarrow$ move towards left
(iii)Subtracting a positive integer $\Rightarrow$ move towards left
(iv)Subtracting a negative integer $\Rightarrow$ move towards right
Here, we are adding (-3) to (-2) first. So move 3 steps towards left from (-2) .
$\Rightarrow$ (-2) + (-3) = (-5)
Now to subtract (-7) from (-5), move 7 steps right from (-5)
$\Rightarrow$ (-5) - (-7) = (+2)