" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x = 1/8 (10y + z)
y = 1/8 (10x + y)
------------------------ x8
8x = 10y + z --> 8x - 10y - z = 0
8z = 10x + y --> 8z - 10x - y = 0
x + y + z = 9
8x - 10y - z = 0
----------------------- +
9x - 9y = 9
>x - y = 1
8z - 10x - y = 0
x - y = 1
---------------------- -
>8z - 9x = -1
8x - 10y - z = 0 x8
-10x - y + 8z = 0 x1
64x - 80y - 8z = 0
-10x -y + 8z = 0
-------------------------- +
54x - 81y = 0
>6x - 9y = 0
✓ x- y = 1 x9
6x - 9y = 0 x1
9x - 9y = 9
6x -9y = 0
---------------- -
3x = 9
x = 3
✓x - y = 1
3 - y = 1
-y = -2
y = 2
x + y + z = 9
3 + 2 + z = 9
z = 9 - 5
z = 4
semoga membantu :))