Question

Simplify this expression: 13 + (–12) – (–5) = ? a. 30 b. –6 c. 6 d. –30

Answer 1

Things to do :

# Simplify the expression


Things to remember:

# Remember that signs in bracket after the 'minus' sign change to the opposite sign
like, if it was '-' then it will be changed to '+'
and, if it was '+' then it will be changed to '-'

Solutions : 

$13+(-12)-(-5)$        
                                        
= $13-12+5$

= $13-7$       
                                        
= $6$        

or,

$13+(-12)-(-5)$

= $13-12+5$

= $13+5-12$

= $18-12$

= $6$

ANSWER: 6, so option C. 6