(1) 4x + 5 = -x- 11

 

B.meme question avec (-3)
asked May 12, 2013 in Calculus Answers by anonymous

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1 Answer

Remplace x par 4

4(4)+5 = -4-11

16+5=-15

21 = -15 pas vrai

4 n'est pas un solution

 

4(-3)+5 = 3-11

-12+5=-8

-7= -8 pas vrai

-3 n'est pas un solution

 

 

 

answered May 13 by anonymous

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