SOLUTION: Find the point of intersection of the lines  
3 x − 6 y  =  12
 4 x − 8 y  =  16
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Linear-equations
-> SOLUTION: Find the point of intersection of the lines  
3 x − 6 y  =  12
 4 x − 8 y  =  16
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You can put this solution on YOUR website! Divide the 1st eqn by 3 and the 2nd by 4.
Both give x - 2y = 4
It's the same equation --> no unique solution.