Question

(x+y-z)+(3x-4y+7z)-(20x+7y-6x)​

Answer 1

Answer:

-10x-10y-8z

Step-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