Question 832167
1.

{y,x} = {-24,-9/2}

<a href="http://tiger-algebra.com/drill/y=4x-6;y=6x_3/">Full solution with graphs on Tiger algebra</a>

2.

{x,y} = {4,12}

<a href="http://tiger-algebra.com/drill/16-x=y;4x-4=y/">Full solution with graphs on Tiger algebra</a>