Question 669280


{{{(x+4y-4z)-(x-3y+4) }}}.....minus sign in front of the parenthesis like you have here({{{-(x-3y+4) }}}) means that the whole parenthesis is negative; so every term inside will change its sign

{{{x+4y-4z-x+3y-4 }}}

{{{x+4y-4z-x+3y-4 }}}

{{{cross(x)+(4y+3y)-4z-cross(x)-4 }}}

{{{7y-4z-4 }}}