How to isolate the varible ‘x’ Show work.

-3x + 12y = 12

6x - 9y = 18

-6x + 2y = -4

6x + 3y = 3

3x - y = 4

-3x + 2y = -17

-6x + 3y = -30

7x + 6y = 16

4x - 2y = 1

16x + 5y = -2

4x - y = -2

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning

Shared decision making is always a positive strategy to take