Question

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

Answer 1

$\bf 7(x+3)=-63$

$\bf 7x+21=-63$

$\bf 7x=-63-21$

$\bf 7x=-84\:\:\:|:7$

$\boxed{\bf x=-12}$ ∈ Z

Answer 2

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 ✓