Question 1130816


{{{67x -66y =664}}}---eq.1...both sides multiply by {{{53}}}
{{{95x -53y =698 }}}---eq.2...both sides multiply by {{{66}}}
--------------------------------------
{{{3551x -3498y =35192}}}---eq.1
{{{6270x -3498y =46068 }}}---eq.2
------------------------------------------------subtract

{{{3551x -3498y -(6270x -3498y) =35192-46068}}}

{{{3551x -cross(3498y) -6270x +cross(3498y) =-10876}}}

{{{-2719x =-10876}}}

{{{x =-10876/-2719}}}

{{{highlight(x =4)}}}


go to {{{67x -66y =664}}}---eq.1, substitute {{{x}}}

{{{67*4 -66y =664}}}

{{{268-66y =664}}}

{{{-66y =664-268}}}

{{{-66y =396}}}

{{{y =396/-66}}}

{{{highlight(y =-6)}}}