SOLUTION: How can I solve 3x+2y=5 & x-2y=4 by using elimination method?

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Question 626003: How can I solve 3x+2y=5 & x-2y=4 by using elimination method?
Answer by Edwin McCravy(20055)   (Show Source): You can put this solution on YOUR website!


Add corresponding terms, using the principle 

"Equals added to equals give equals"


  <- Notice that the y terms were eliminated.
 
    4x = 9
     x = 

Now let's eliminate the x-terms.  To do that we have to make the
x-terms cancel out like the y-terms did in the first case.



Let's multiply the second equation through by -3 so that the 1x
will become -3x and will cancel with the 3x in the first
equation:




  <- Notice that the x terms were eliminated.
 
    8y = -7
     y = 
     y = 

Solution: If the lines were graphed they would intersect at

the point (,)
     
Edwin

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