(1) Is the equation true false or open?

Question

9p + 8 = 10p + 7

A. open;there is a variable *****
B. true;the expressions are all the same for all values of the variiables
C. false;the expressions are never the same

(12) Which equation is an identity?

A. 11 - (2v + 3) = -2v - 8
B. 5w + 8 - w = 6w - 2 (w - 4) *****
C. 7m - 2 = 8m + 4 - m
D. 8y + 9 = 8y - 3

(13) Which equation has no solution?

A. 5w + 4 - w = 9w - 2 (w - 2)
B. 3x - 5 = 3x + 8 -x
C. 7z + 6 = -7z - 5 *****
D. 4y + 5 = 4y - 6

(14) Solve the following equation.
2 (h - 8) - h = h - 16

A. h = 8
B. h = -8 *****
C. infinitely many solutions
D. no solution

(19) Solve the following equation
-4y + 8 = 4 (2y - 2) - 2 (-16 + 8y)

A. y = -4
B. y = 4
C. y = -2
D. y = -6 *****

My answer is *****, and the ones i got wrong can you teach me how to solve them please. Thankyou

Answer 1

I disagree with #'s 13, 14, and 19
I agree with the others.

Here is a video, (not very exciting), that explains it
https://www.youtube.com/watch?v=9RtbpZBXs5I

Answer 2

1.A
2.A
3.A
4.B
5.A
6.D
7.C
8.C
9.B
10.D
11.C
12.B
13.A
14.C
15.D
16.D
17.D
18.A
19.B

Answer 3

katai. this whole answer thing is a 13 outta 19. so some of them arent correct in there somewhere.

Answer 4

Hm...I see that We have an untrustworthy response, that leaves me to give you a proper answer.