(x+y-z)+(3x-4y+7z)-(20x+7y-6x) – InterviewSolution

1.	(x+y-z)+(3x-4y+7z)-(20x+7y-6x)
Answer» -10x-10y-8zStep-by-step explanation:QUESTION》(x+y-z)+(3x-4y+7z)-(20x+7y-6x)=SOLUTION =(x+y-z)+(3x-4y+7z)-(20x+7y-6x) ( 1ST REMOVE brackets)=x+y-z+3x-4y+7z-20x-7y+6x (now ADD like terms)=(x+3x-20x+6x)+(y-4y-7y)-(z+7z)= -10x-10y-8z

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