x - 2y + 2z = -1 , x + 2y - z = 6 , -3x + 6y -6z = 3 ? 10 POINTS?
Can anyone solve this system of equations in three variables ? Please show all the steps, thanks (:
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Standard form: x-2y+2z=-1; x+2y-z=6; -3x+6y-6z=3;
substitute/eliminate x = +2y-2z-1
substitute/eliminate y = +3/4z+7/4
dependent system - infinitely many solutions.
x=-0.5z+2.5; y=+0.75z+1.75;