The matrix below represents a system of equations. Write the equations below using `x`, `y`, and `z` as the variables in order.

`[(3,-2,-1,0),(-2,2,6,68),(7,-2,5,118)]` 

The first equation is  

The second equation is  

The third equation is  

Get help: Video

Box 1: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Be sure your variables match those in the question

Box 2: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Be sure your variables match those in the question

Box 3: Enter your answer as an equation. Example: y=3x^2+1, 2+x+y=3
Be sure your variables match those in the question