Math

[reeses4life]

2. Solve the equation:
3 ( x -7 ) - x = 2x - 21

A) 7
B) -2
C) Infinitely many solutions
D) No solution

3. Which equation has no solution?

A) 7v+2=8v-3
B) 3x-5=3x+8-x
C) 4y+5=4y-6
D) 7z+6=-7z-5

3. Which equation is an identity?

A) 8-(5x+2)=-5x-6
B) 7z+10-z=8z-2(z-5)
C) 8m-4=5m+8-m
D) 6y+5=6y-5


I think
C
C
B

[fiction-factory]

x=7

[fiction-factory]

Oh, is the 3 on the line after teh 2 a question number or part of teh equation?

[reeses4life]

Part of the equation

[fiction-factory]

if the 3 is outside teh bracket then for 2 we get 2x-21=2x-21 so it's an identity with I suppose infinite number of solutions

[Jackdaw33]

Either C or D. You end up with 2x -21 = 2x -21. I'll plump for D.

[fiction-factory]

Your second one (question 3) is indeed C

[fiction-factory]

yes, 3 is B

[fiction-factory]

That's the second question 3. The numbering is confusing

[reeses4life]

I messed up the question numbering, it should've been 1,2,3 not 2,2,3

[Togo]

Reesey, I note that over the months you have had willing help with your homework here on the Bank. A couple of tips. Firstly make sure that your question layout and presentation is fit for purpose. Secondly pay more attention to your tutors than you do when setting your questions............ Having said that keep asking..... you at least show initiative. (^_*)