Question

What value of k makes the equation true?



12 + (–17) = –17 + k



k =

Answer 1

.. i dont get it

Answer 2

@SydtheKid913

Answer 3

hello?

Answer 4

hi sorry am making a power point on the history of automobiles :P

Answer 5

So what we have here is the associative property of addition.

Answer 6

now you see that on one side we have 12 + (-17) and then we have an = sign now what does = mean?

Answer 7

= means equivalent or the same as so if we have 12 + (-17) is the same as -17 + k then we see that both sides of the equation must be the same

Answer 8

it means equals the same

Answer 9

so what is 12 + (-17) ?

Answer 10

-5

Answer 11

that is correct now what do we have to do to -17 to get it to equal -5?

Answer 12

+12?

Answer 13

correct!!! great job! :D

Answer 14

yay

Answer 15

do you see why your answer would be 12? it is because the equation was 12 + (-17) = -17 + k so if they are equal then you know you have to get one side to equal the other side

You probably already got that but I just want to make sure :P :D

Answer 16

yea.

Answer 17

lol XD