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 :
[tex]13+(-12)-(-5)[/tex]
= [tex]13-12+5[/tex]
= [tex]13-7[/tex]
= [tex]6[/tex]
or,
[tex]13+(-12)-(-5)[/tex]
= [tex]13-12+5[/tex]
= [tex]13+5-12[/tex]
= [tex]18-12[/tex]
= [tex]6[/tex]
ANSWER: 6, so option C. 6
