Розвязати............

Question

Розвязати............

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Answer 1

{xy=1
{yz=2
{zx=8

{y=1/x
{z/x=2
{2x*x=8;2x²=8;x²=4;x=±2
z=2x=±4
y=1/x=±1/2

x+y+z=2+4+1/2=6 1/2