Question

Need help with these questions please!

Simplify (x - y + 1) - (x + y - 1).

2x - 2y + 2
-2y + 2
2y - 2
-2x + 2y

Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

Simplify [Q - R] + [S - T].

10m + 5n - 24
10m - 5n + 24
10m + 7n - 14
10m - 7n - 14

Simplify {n - 1 - [n - 1 - (n - 1)]}.

n - 1
-n - 1
3n - 3
-3n + 3

Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.

Simplify R - S + T.

m - 2n - 2
-m + 2n - 2
3m - 4n + 14
-3m - 4n + 14

I only need the answer but if you could tell me how you got the answer I would appreciate it!

Answer 1

Algebra questions which involve you to use the order of operations to solve

Answer 2

Try splitting your questions in separate threads
I'll help with the first:
\[x-y+1-x-y+1=-2y+2\] distribute the negative and combine like terms

Answer 3

Thank you! @VeritasVosLiberabit

Answer 4

PEDMAS

Answer 5

parenthesis,exponens,division,mult,addition & subtraction just always remember to do in that order and we will have no problems

Answer 6

Thanks! @dan815

Answer 7

:)

Answer 8

I wish I knew the answers to this stuff :[ @dan815

Answer 9

math is pretty easy its like learning a language, its gonna feel hard but once you get fluent in math it will become like reading you will keep learning faster and faster

Answer 10

feel hard in the beginning only

Answer 11

For the second one, you want to substitute the values for Q, R, S, and T and solve the brackets separately before you subtract them from each other. So for example\[[Q-R] = [(7M+3N) -(11 - 2M)]\] After you distribute the negative sign you will have\[[7M+3N - 11 + 2M]\] and solving for that you will end up with\[[9M+3N-11] + [S-T]\]Do the same with the other values of S and T and then subtract the 2 brackets from each other to find your answer.

Answer 12

Thanks! @Johnbc