Multiply by Common Denominator to get,
Problem 2.Originally Posted by autopimp
Solve by substitution:
In the substitution method we solve one of the equations for one unknown and plug it into the other...this creates an equation with only one unknown in it. I tend to pick the simplest variable to solve for. In this case that looks to be the x in the second equation.
So solving the second equation for x I get:
Plugging this value of x into the first equation I get:
I'll let you take it from here. You may plug this value of y into any of the original equations, or more simply, into your x equation. I get (x,y) = (5,-1).