Question

2y+z=3(-x+1 ) ;-x+3y =-4 : 3x +2y+Z =-1/2

Answer 1

Step-by-step explanation:

x + 2y − z = 6 -----(1)

-3x − 2y + 5z = −12 -----(2)

x −2z = 3 -----(3)

(1) + (2)

x + 2y − z = 6

-3x − 2y + 5z = −12

---------------------

-2x + 4z = -6 -----(4)

From (3),

x = 3 + 2z

By applying the value of x in (4)

-2(3 + 2z) + 4z = -6

-6 - 4z + 4z = -6

-6 + 6 = 0

0 = 0