Question

sub 3x - 4y -7z from the sum of x - 3y + 2z and -4x+9y- 11z

Answer 1

sum of (x-3y+2z) and (-4x+9y-11z)is -3x+6y-9z
therfore answeris 2y-16z

Answer 2

❤❤$\bold {here}{ is} {your}{ answer }{ }$✌✌

$( - 4 + 9y - 11z + x - 3y + 2z) - (3y - 4y - 7z) \\ = (- 4 + 6y + x - 11z) - ( - y - 7z) \\ = ( - 4 + 6y + x - 11z + y + 7z) \\ = ( - 4 + 7y + x - 4z)$