9x6y1 9y6z6 9x2z4 x y zSolutionThe system 9x6y 1 1 9x

9x+6y=1

9y+6z=6

9x2z=4

x=

y=

z=

Solution

The system : - 9x+6y = - 1 ----(1)

- 9x - 2z= -4 -----(3)

eqn (1) - (2) 6y +2z= 3 -----(4) multiply by 3

18 y + 6z = 9 ------(4) given 9y+ 6z= 6 ----(2)

eqn (4) - (2) 9y = 3 => y= 1 /3 , substitue in eqn (2) 3+6z= 6 => 6z= 3 => z= 1/2

substitue in (3) - 9x - 1= - 4 => - 9x = -3 => x= 1 /3 , y = 1/3 , z= 1/2