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

Question

3534 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-11T11:33:16

$=+0.8$

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

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

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

$=+0.8$

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