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Rezolvati (2x+1):3=7
Repede va rog corect.


Răspuns :

2x+1=7×3
2x+1=21
2x=21-1
2x=20
x=20:2
x=10
(2x+1):3=7⇒2x+1=3x7⇒2x+1=21⇒2x=21-1⇒2x=20⇒x=20|2⇒x=10
succes