the sum of 6 and -12 decreased b y 21 write an algebraic expression and simplify

Question

bahrom7893 · Answer

(6-12)-21=-27

anonymous · Answer

I can always count on U thNX

bahrom7893 · Answer

np

anonymous · Answer

7/4$$\div$$ - 21/2

anonymous · Answer

why would (-21/2)  have brackets like this?

bahrom7893 · Answer

because it's negative.. but it doesn't really matter..

bahrom7893 · Answer

they usually put parenthesis around negative numbers..

anonymous · Answer

but in one case there positive absolute value right? thats just lines then?

anonymous · Answer

ok.

bahrom7893 · Answer

yes if u have absolute value then u just have lines.. |   |

anonymous · Answer

ok thank you and if then theres a negative number on outside it remains negative

anonymous · Answer

so that prob threw me off I got it thanx

bahrom7893 · Answer

okay np..
-1/6 is the answer just in case..

anonymous · Answer

ok thanx

anonymous · Answer

how did u determine it was negative?

bahrom7893 · Answer

well the negative from -21/2 doesn't go anywhere.. unless u multiply it by another negative..

anonymous · Answer

ok

anonymous · Answer

($$\div$$

anonymous · Answer

8$$(8\div 4)^{2}$$

anonymous · Answer

forget about the eighht above that im not sure how to do that though

bahrom7893 · Answer

8 divided by 4 is 2... 2 squared is equal to 2*2=4
(8/4)^2 = (2)^2=4

anonymous · Answer

you square the 2 ok

anonymous · Answer

-8/11+ 1/2

bahrom7893 · Answer

sorry post this as new thread.. i won't be able to help u i gtg and nobody else will notice if u keep posting it here..