Answer :

5x=5-25y => x = 1 - 5y;but, 3x-2y=6 => 3( 1 - 5 y ) - 2y = 6 => 3 - 15y - 2y =  6=>-17y = 3 => y = -3 / 17;x = 1 - 5 * ( -3 / 17 ) => x = 1 + 15 / 17 => x = 32 / 17.

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