Could you guys answer this now because have to answer it and i have no idea what to do

Um here...

Solve the equation = 1.3

Find 1.3 on the numberline... draw a line to 1.3

→↓

←→

-2                     -1.5                   -1                   -0.5                 -0

                                           ↑

                                          1.3

Does this make sense?

use this formula:

p(a\b) = p(a and b)/p(b).

take it from here.

-2

7 - 9 = -2

reversed:

-2 + 9 = 7