Bhattercupx08viz
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subtract the sum of 2x-3y-8z and -12x-8y+5z from the sum of -3x+5y-11z and -12x+5y-2z?

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Jameskino25viz
[tex](2x-3y-8z)+(-12x-8y+5z) \\ = 2x-3y-8z-12x-8y+5z \\ =-10x-11y-3z[/tex]


[tex](-3x+5y-11z)+(-12x+5y-2z) \\ =-3x+5y-11z-12x+5y-2z \\ =-15x+10y-13z[/tex]


[tex](-10x-11y-3z)-(-15x+10y-13z) \\ =-10x-11y-3z+15x-10y+13z \\ =5x-21y+10z[/tex]
Julieeviz
       2x-3y-8z                    -3x+5y-11z                    -10x-11y-3z
+   -12x-8y+5z              +  -12x+5y-2z       =     -     -15x+10y-13z
_______________         ______________         ________________
      -10x-11y-3z              -15x+10y-13z                   5x-21y+10z

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