Question 51625
For the first equation, substitute -3 for x:  {{{8*(-3)+7}}}, which yields {{{-24+7}}}, which simplifies to {{{-17}}}.  For the second equation, we'll use expansion and order of operations:  {{{-6*2x-(-6)*9-4x+5}}}, which simplifies to {{{-12x+54-4x+5}}}.  Combining like terms we get {{{-16x+59}}}.