I have to use elimination to figure out this problem, I can do it with 2 equations and 2 variables but I can't understand the 3
-3x + y - z = -10
-4x + 2y +3y = -1
2x + 3y -2z = = -5
Take the value of z from 1st equation and substitute in 2nd and 3rd equation.then you will be left with x and y variable solve them and then put it back on 1st equation you will get z.Let me know if you understand it?
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