Question

What is the value of the variable that makes the statement true? c+(–8)+(–5) = 0

a. –13
b. –3
c. 3
d. 13

Answer 1

Adding a positive number is the same as subtracting. Therefore:
C-8-5=0
Then add thise nunbers to bith sides and you get
C = 13

Answer 2

d. 13

Explanation:

In order to find the value of c, we have to solve the operations between signs, following this rule:

`(+)(-)=-`

Therefore:

`c+(-8)+(-5)=0\\c-8-5=0`

Finally, we solve the equation

`c-8-5=0\\c-13=0\\c=13`

Therefore, the value of c that makes the statement true is 13 (Option d)