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Didi328
a fost răspuns

2 pe 5 •x +72= x va rog repedee!

Răspuns :

Gly
[tex]\dfrac{2}{5}\cdot{x}+72=x[/tex]
[tex]\dfrac{2}{5}x+72=x[/tex]
[tex]\dfrac{2}{5}x+^{5)}72=^{5)}x[/tex]
[tex]2x+360=5x[/tex]
[tex]2x-5x=-360[/tex]
[tex]-3x=-360~~\big{|}\cdot{(-1)}[/tex]
[tex]3x=360[/tex]
[tex]x=360:3 \\ x=120[/tex]
SignOfTheTimes
Salut,

2/5 • x + 72 = x
2x/5+72 = x
2x+360 = 5x (am amplificat cu 5)
2x-5x = -360
-3x = -360 /•(-1)
3x = 360
x = 360/3
x = 120.


Succes! :3

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