Question

How do you find the sum or difference of (4x+2y−6z)+(5y−2z+7z)+(−9z−2x−3y)?

Answer 1

(4x + 2y - 6z ) + (5y - 2z + 7z ) + ( - 9z -2x - 3y )

First seperate and group the like terms :

( 4x - 2x ) + ( 2y - 3y + 5y ) + ( - 6z - 2z +7z -9z)

Then simplify them :

• 4x - 2x = +2x

• 2y - 3y = -1y +5y = +4y

• -6z -2z = (-8z) +7z = -1z -9z = (-10z)

= 2x + 4y - 10z

Hope it helps ✌️