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urgentttt
Rezolvati in multimea nr intregi ecuatia
7(x+3)=-63​


Răspuns :

[tex]\bf 7(x+3)=-63[/tex]

[tex]\bf 7x+21=-63[/tex]

[tex]\bf 7x=-63-21[/tex]

[tex]\bf 7x=-84\:\:\:|:7[/tex]

[tex]\boxed{\bf x=-12}[/tex] ∈ Z

Răspuns:

x = -12

Explicație pas cu pas:

Salut! :)

7(x+3) = -63​

7x + 21 = -63

7x = -63 - 21

7x = -84  /:7

x = -12

S = {-12}

-12 ∈ Z ✓