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Rezolvati
(6x+2x)/6=40


Răspuns :

8x = 6 · 40 
8x = 240 
x = 240 :8 = 30
[tex]\displaystyle \frac{6x+2x}{6} =40 \\ \frac{8x}{6} =40 \cdot 6 \\ 8x=240 \\ x= \frac{240}{8} \\ x=30[/tex]