Given 2x + 3y-4z = 0, 3x + 3Y + 5Z = 0, find the value of X + y + X / X-Y + Z

Formula 2-1 is as follows:
X+Y=-9Z…… Formula 3
Formula 1 and formula x2-2
X+2Y=13Z…… Type 4
Formula 4-3: y = 22z
Substituting into formula 3, we get: x = - 31z
So there are: x + y + Z / X-Y + Z=
-31Z+22Z+Z/-31Z-22Z+Z
=8/-52=2/-13

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