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Rezolvati ecuatiile :
x-1supra6 + 2x+1supra9=x-8


Răspuns :

x-1/6+2x+1/9=x-8
3x-x=1/6-1/9-8
2x=(3-2-144)/18
2x=-143/18
x=-143/(2·18)
x=-143/36
x=-3,97(2)