Question 931291

{{{3x+8y-7=0}}}

 (?,5)=> we are looking for {{{x}}} and {{{y=5}}}

{{{3x+8y-7=0}}}...plug in  {{{y=5}}}

{{{3x+8*5-7=0}}}

{{{3x+40-7=0}}}

{{{3x+33=0}}}

{{{3x=-33}}}

{{{x=-33/3}}}

{{{x=-11}}}

so, (?,5) is (-11,5)