Question

how does 50+(n-1)-9 become 59-9n?

Answer 1

You have to distribute the -9 to the (n-1), then combine like terms.

Answer 2

So:

-9(n-1)+50=
-9n+9 +50...
and so on.

Answer 3

thank you

Answer 4

that isnt a distribution

Answer 5

these are sums, not multiplication

50+(n-1)-9

50-9+(n-1)

-9+50+(n-1)

Answer 6

as is, there is no means of determining how you get from one to the other; youre missing information

Answer 7

i'm not missing information that's simplifying 50+(n-1)-9, i just didnt know how to get the answer which is 59-9n

Answer 8

the answer to what you have posted is; 50+n-10

Answer 9

why does the back of the book say otherwise then? (new answer)

Answer 10

well, maybe you posted it wrong?

anyways, according to your post, the answer simplifies to 40+n

Answer 11

ok np ;p