Question 651834
{{{8-7x<=1-3X}}}...add {{{7x}}} to both sides

{{{8-7x+7x<=1-3X+7x}}}

{{{8-cross(7x)+cross(7x)<=1-3X+7x}}}

{{{8<=1+4x}}}........add {{{-1}}} to both sides

{{{8-1<=1-1+4x}}}

{{{7<= cross(1)-cross(1)+4x}}}

{{{7<= 4x}}}....both sides multiply bu {{{1/4}}}

{{{7(1/4)<= (1/4)4x}}}

{{{7/4<= (1/cross(4))cross(4)x}}}

{{{7/4<=x}}}...or...{{{x>=7/4}}}

{{{ graph( 600, 600, -6, 6, -10, 10, 7/4<=x) }}}