Question 1081633


{{{3(1-x) >= -3(x+2)}}}........first both sides multiply by {{{3}}} 

{{{3-3x >= -3x-6}}}..........now you can add {{{-3}}} to the both sides{ to, actually, move {{{3}}} from left to right side) 

{{{3-3-3x >= -3x-6-3}}}

{{{cross(3)-cross(3)-3x >= -3x-6-3}}}........{{{3-3=0}}}

{{{0-3x >= -3x-9}}}..now you can add {{{3x}}} to the both sides

{{{0-3x+3x >= -3x+3x-9}}}

{{{0-cross(3x)+cross(3x) >= -cross(3x)+cross(3x)-9}}}

{{{0-0 >= 0-9}}}

{{{0 >= -9}}}