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Rezolvati in Z ecuatiile :
a) 5x+11=66
b) x:(-3)= -- 12
c) 120 : x= 30


Răspuns :

Răspuns:

Explicație pas cu pas:

a)

[tex]\displaystyle 5x+11=66\\5x=66-11\\5x=55\\x=55:5\\x=11[/tex]

b)

[tex]\displaystyle x:(-33)=-12\\x=(-12)(-33)\\x=396[/tex]

c)

[tex]\displaystyle 120:x=30\\x=120:30\\x=4[/tex]

11, 396, 4∈Z