Question

use the number line above to solve: $6 - (-3)$
a $-9$
b $9$
c $3$
d $-3$

Explanation:

Step1: Rewrite subtraction as addition

$6 - (-3) = 6 + 3$

Step2: Calculate the sum

$6 + 3 = 9$
(On the number line: Start at 6, move 3 units right to reach 9)

Answer:

B. 9