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Question Number 196964 by Mingma last updated on 05/Sep/23

Answered by Rasheed.Sindhi last updated on 05/Sep/23

x+y=−9 ∧ x+2y=−25 ⇒x+2(−9−x)=−25 x−2x=−25+18=−7 x=7

x+y=−9∧x+2y=−25⇒x+2(−9−x)=−25x−2x=−25+18=−7x=7

Answered by Frix last updated on 06/Sep/23

I 2x+2y=−18 II x+2y=−25 I−II x = 7

I2x+2y=−18IIx+2y=−25I−IIx=7

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