Respuesta :

YuutoKatou

Answer:

-30 - 40 - 70, see below

Step-by-step explanation:

+- combines to -

++ combines to +

-+ combines to -

-- combines to +

-30 + (-40) + (-70)

-30 - 40 - 70

:)

xuclaire027

Answer:

-140

Step-by-step explanation:

-30+(-40)+(-70)

-30-40-70

-70-70

-140

I think this is the answer, I hope it's what you're looking for