It equals 1 + 3z and, unless you know the value of z, you are not going to be any the wiser as to its value.
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x, y and z are the variables.
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5x-2y+3z-2x-y-4z=3x-3y-z
Solve this system of equations. 5x+3y+z=-29 x-3y+2z=23 14x-2y+3z=-18 Write the solution as an ordered triple.
8x + 5z - 4x + 3z + 6 = 8x - 4x + 5z + 3z - 6 = 4x + 8z - 6