system of equations2

Given the equations:

$$x+y=3\ \ \ and\ \ \ x-y=1$$  

what is the value of 6x?

What is the solution to the equations:

$$11x+2y=44\ \ \ and\ \ \ 8x+2y=32$$  ?

Given the equations:

$$x+y=8\ \ \ and\ \ \ x-y=10$$  

what is the value of 4y?

What is the solutions to the equations:

$$2x+7y=31\ \ \ and\ \ \ 5x-7y=-45$$  ?

Given the equations:

$$12x+5y=-78\ \ \ and\ \ \ -8x+10y=-28$$  

What is the value of 5x?

What is the solution to the given linear equations?

$$y=3x+2\ \ \ and\ \ \ 2x+y=-8$$  ?

Given the following equations:

$$x+y=2\ \ \ and\ \ \ y=-2x-1$$  

what is the value of -3y?

What is the solution to the given equations?

$$x+y=9.6\ \ \ and\ \ \ x=2y-7.2$$  ?

Given the equations:

$$x-y=1\ \ \ and\ \ \ y=\frac{3}{4}x+1$$  

what is the value of 2x?

What is the solution to the equations

$$5x-9y=22\ \ \ and\ \ \ 3x-9y=6$$  ?