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