If 2x + 3y = y, which of the following must be equivalent to 12x + 12y?

Step-by-step explanation:

Sorry. I don't know how to do this problem but look.

Steps on solving system of equations:

If 7x + y = 25 and 6x + y = 23, what is the value of x?

Possible Answers:

2  

6  

11

7

20

Correct

2

Explanation:

You can subtract the second equation from the first equation to eliminate y:  

7x + y = 25 – 6x + y = 23: 7x – 6x = x; y – y = 0; 25 – 23 = 2  

x = 2  

You could also solve one equation for y and substitute that value in for y in the other equation:  

6x + y = 23 → y = 23 – 6x.  

7x + y = 25 → 7x + (23 – 6x) = 25 → x + 23 = 25 → x = 2

is there multiple choice? just wondering

Step-by-step explanation:

i dont know

step-by-step explanation:

(w – 2.5)(w + 2.5)

(–4v – 9)(–4v + 9)

step-by-step explanation: