How do solve the following linear system?: # 8x+2y=3 , 2x+7=-5y #?
Let's isolate for
Now plug that into the first equation for
multiply both sides by
Now let's solve for
Let's check our work by graphing the two equations and seeing where they intersect
Looks right! Good job
Converting  into standard form:
We note that if we multiply  by
Subtracting  from  (to get rid of the
Dividing both sides of  by
Verifying by substituting
Yes: results verified!