Question 399717


{{{-4x-y=y}}} ...add {{{-y}}} to the both sides 


{{{-4x-y -y=y-y}}}

{{{-4x-2y = 0}}}

now solve in substitution form:

{{{-4x-2y = 0}}}

{{{3x-y=0 }}}


*[invoke solving_linear_system_by_substitution -4, -2, 0, 3, -1, 0]