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Mathematics, 14.10.2020 17:01 aliviadushane

Prove that the following triplets of the lines are concurrent. x+2y=0,3x-4y-10=0,5x+3y-7=0
2x-7y+10=0,3x-2y=0,x-12y+21=0
9x-13y-90=0,2x+11y-20=0,7x+y-70=0

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Prove that the following triplets of the lines are concurrent. x+2y=0,3x-4y-10=0,5x+3y-7=0
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