3y + 4z + 12y = 3y
-3y -3y
-------------------------
4z + 12y = 0
divide everything by 4
z + 3y = 0
-3y -3y
z = -3y
5x-2y+3z-2x-y-4z=3x-3y-z
9x + 3y + 5z - 5x + 4z - 7y = 4x - 4y + 9z
-8z + 12 = 12 - 4z-8z +4z + 12 = 12 - 4z +4z-4z + 12 -12 = 12 -12-4z / -4 = 0 / -4z = 0:)
6z-4z-z = 6-7-4 z = -5
(z=-3) and (z=7)
its 10x +9y +1z
5x-2y+3z-2x-y-4z=3x-3y-z
9x + 3y + 5z - 5x + 4z - 7y = 4x - 4y + 9z
3x-3y+7z
There are 3 terms in the given expression
-8z + 12 = 12 - 4z-8z +4z + 12 = 12 - 4z +4z-4z + 12 -12 = 12 -12-4z / -4 = 0 / -4z = 0:)
9z
7 + 4z = 437 + 4z -7 = 43 - 7 4z = 43 - 7 4z = 36 z = 9
== ==
10x2 - 20xz + 15xy = 5x (2x - 4z + 3y)
To simplify the expression (-8x - 4z - 5x + 2yz - 3y), combine like terms. The terms (-8x) and (-5x) combine to (-13x). Thus, the simplified form is (-13x - 4z + 2yz - 3y).
6z-4z-z = 6-7-4 z = -5