SOLUTION: solve by elimination method
6x-9y=25.5
7y-3x=-14
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Question 320376: solve by elimination method
6x-9y=25.5
7y-3x=-14
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
6x-9y=25.5
7y-3x=-14
-3X+7Y=-14 MULTIPLY BY 2 & ADD TO THE FIRST EQUATION.
-6X+14Y=-28
6X-9Y=25.5
----------------
5Y=-2.5
Y=-2.5/5
Y=-.5 ANS.
6X-9*-.5=25.5
6X+4.5=25.5
6X=25.5-4.5
6X=21
X=21/6
X=3.5 ANS.
PROOF:
3*-3.5+7*-.5=-14
-10.5-3.5=-14
-14=-14
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