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

Simple math first you got to do Simplify {n - 1 - [n - 1 - (n - 1)]}. then you have to Simplify R - S + T.

m - 2n - 2
-m + 2n - 2
3m - 4n + 14
-3m - 4n + 14
Last but not least you do this 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

Answer 2

1.y = -x -1

y = -(-1) -1 = +1-1 = 0
2.3n+5=7(n-7)
3.(1/2!)+(2/3!)+(3/4
4.q+(q^2-4pr)^1/2