Answer :
You have only listed one value for 'x'.
If 'x' is 2/3, then 6x is (6 times 2/3). That's 12/3 or 4 .
If 'x' is 2/3, then 6x is (6 times 2/3). That's 12/3 or 4 .
[tex]6x=6\times x=6\cdot x\\\\substitute\ x=\frac{2}{3}\ to\ 6x:\\\\6\times\frac{2}{3}=\frac{\not6^2}{1}\times\frac{2}{\not3_1}=2\times2=4[/tex]
