what is negative 8 subtract positive 5 subtract (negative 13)

Question

im bout fail 7th grade so if i do my vocab and re due this test i might pass and we have 10 days left

Answer 1

what is negative 8               -8

subtract positive 5              - 5

subtract (negative 13)     -(-13)

                                   ----------

 

change to +13    [subtracting negative number is the same as adding positive number]

                                        -8

                                       - 5

                                     +13

                                    -----

                                         0

 

 

Answer 2

(-8) + 5 - (-13)

=-8 + 5 + 13

=10