Which equation demonstrates the opposite of a sum property? a. (22 + 10) + 3 = (10 + 22) + 3 b. –5 + 13 = 13 + (–5) c. (12 + (–4)) + 14 = 12 + ((–4) + 14) d. –(–6 + 17) = 6 + (–17)

Choice D which is -(-6 + 17) = 6 + (-17)

A sum is the result of adding two numbers. It doesn't matter if those numbers are positive or negative. In choice D, we start with -6 and 17 which add to -6+17. Then we apply a negative sign to that entire thing to take the complete opposite to get -(-6+17)

The negative sign is distributed through to each term. Whatever was negative turns positive, or vice versa. So -6 turns to +6 or just 6, and 17 becomes -17. That explains how your teacher got 6 + (-17).

x=2 & x=1

step-by-step explanation:

7*1=7

7*2=14

7 is less than 21

14 is less than 21

the temperature will be -18 just do 62 + (-40) + (-40)

step-by-step explanation: