Question

aflați x daca :

[2*(6* x - 28)+20]:3+9=17​

Answer 1

Răspuns:

Salutare!

[2*(6x-28)+20]:3+9=17

(12x-56+20):3+9=17

(12x-36):3+9=17

$\frac{12x-36}{3}+9=17$

$\frac{3(4x-12)}{3}+9=17$

4x-12+9=17

4x-3=17

4x=17+3

4x=20

x=20:4

x=5

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