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Wednesday, October 10, 2012

Solving Two Unknown Variables - Two Rational Equations

Category: Algebra

"Published in Newark, California, USA"

Solve for the unknown variables for the given equations
 
 

Solution:

Let's assign equation #1 for the first equation and equation #2 for the second equation
 
 

Multiply equation 1 by 3 and multiply equation 2 by -1 and then add the two equations
 
         
                                    +
                                            -----------------------------------
 
                                       

Substitute the value of x either in equation 1 or equation 2
 
 
 
 
 

Therefore, the answers are
 
                                and