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Rezolvand ecuatia 2*[2+2(x+2)]=24 se obtine solutia:
a) 7
b)5
c)3
Urgent!! (cu rezolvare va rog)


Răspuns :

2 * [ 2 + 2 ( x + 2 ) ] = 24
2 + 2 * ( x + 2 ) = 24 : 2
2 + 2 * ( x + 2 ) = 12
2 * ( x + 2 ) = 12 - 2
2 * ( x + 2 ) = 10
x + 2 = 10 : 2
x + 2 = 5
x = 5 - 2
x = 3