1.

A=2x+3y-5z,B=-8x-9y-3z,C=6x+6y+8z,then A+B+C=​

Answer»

0Step-by-step EXPLANATION:A+B+C=2x+3y-5z-8x-9y-3z+6x+6y+8z =8x-8x+9y-9y-8z+8zA+B+C=0



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