Question 1043064
x girls and y boys are in the band.


MONDAY
{{{(x-30)/y=2/5}}}
-
{{{5(x-30)=2y}}}
{{{5x-150=2y}}}
{{{5x-2y=150}}}


TUESDAY
{{{(x-30)/(y-40)=2/1}}}
-
{{{x-30=2(y-40)}}}
{{{x-30=2y-80}}}
{{{x-2y=-80+30}}}
{{{x-2y=-50}}}



Solve this system: {{{system(5x-2y=150,x-2y=-50)}}}.  Any method you want.


{{{5x-x-2y-(-2y)=150-(-50)}}} as a first step using Elimination Method...