Question

subtract 3x-4y-7z form the some of x-3y+2z and -4x+9y-11z

Answer 1

heya mate

(( some not ,,,, its sum )) ok now no issues

here is your answer

1stly add last 2 equations like this

( x - 3y + 2z ) + ( -4x + 9y - 11z )

=> x - 3y + 2z - 4x + 9y - 11z

=> -3x + 6y - 9z

now subtract 3x - 4y - 7z

from -3x + 6y - 9z

( -3x + 6y - 9z ) - ( 3x - 4y - 7z )

-3x + 6y - 9z - 3x + 4y + 7z

= ( -6x + 10y - 2z )

thanks !!!!!

Answer 2

(x-3y+2z)+(-4x+9y-11z) = x-3y+2z-4x+9y-11z
= -3x+6y-9z
now, (-3x+6y-9z) - (3x-4y-7z )
= -3x+6y-9z-3x+4y+7z
= -6x+10y-2z