what should be added to x+2y +z, so that the sum be z
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Answer:
-(x+2y)
Step-by-step explanation:
Lets proove it-
x+2y+z=0
=>x+2y+z+[-(x+2y)]=z
=>x+2y+z+[-x-2y]
=>x+2y+z-x-2y
=>x-x+2y-2y+z
=>z=z
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