Sunday, August 25, 2013

Use the method of substitution to solve the system of linear equations. 2x-y=5, 5x-2y=13

1) 2x-y=5
2) 5x-2y=13 


5x-2(2x-5)=13
x=3 
y=2(3)-5=1

solution: (3,1)

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