Question

How do you simplify `-2[7.5 + (-7.9)]` using order of operations?

Answer 1

`=+0.8`

Explanation:

`-2[7.5color(blue)(+(-7.9))]" "larr` start with the inner-most brackets

`=-2[7.5color(blue)(-7.9)]" "larr` simplify the square brackets

`= -2[-0.4]" "larr` multiply

`=+0.8`