you should move the 3x over to the 6x, making the equation
[tex]10 - 1 \geqslant 9x[/tex]
you then divide the 9 on both sides, making 9/9x become 1x or just x, and the other 9/9, which equals 1. overall, your final equation should be
[tex]x \leqslant 1[/tex]