Question 392908
{{{8x-2=-9+7x}}}......to both sides add {{{-7x}}}

{{{8x -2 - 7x =-9+7x -7x}}}

{{{8x - 2 - 7x = -9+ cross(7x) -cross(7x)}}}

{{{8x - 2 - 7x = -9}}}.....to both sides add {{{2}}}

{{{8x - 2 + 2 - 7x = -9 + 2}}}

{{{8x -cross( 2) + cross(2) - 7x = -9 + 2}}}


{{{8x - 7x = -9 + 2}}}


{{{x  = -7 }}}