Elimination method:

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$\"\"$ ---------->( 1 )

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$\"\"$ ---------->( 2 ) \ \

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To eliminate the value add ( 1 ) and ( 2 ).

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$\"\"$

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$\"\"$

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___________

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~~$\"\"$~~

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Substitute the value $\"\"$ in ( 1).

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$\"\"$

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Solution $\"\"$ , $\"\"$ .