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In the following system of equations ...

In the following system of equations determine whether it has unique solution, no solution or infinitely many solutions. In case there is a unique solution, find it: `3x-5y=20 ,\ \ \ 6x-10 y=40`

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The correct Answer is:
`(a_(1))/(b_(2))= (b_(1))/(b_(2))= (c_(1))/(c_(2))`
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