Solve by elimination method:
3x-5y=1
6x-10y=4
Solution:
First we solve for x in the first equation
The second equation,
becomes...
which we simplify as follows...
this clearly a contradiction. This contradiction tells us that our system has no solution. (Whenever we arrive at a contradiction after following the solution method correctly we know that the system has no solution. If we arrive at an identity we know that the lines are coincident)
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