👤

afla numarul necunoscut (5x-2):9=7​

Răspuns :

Salut!:)

(5x-2):9=7

(5x-2)=9×7

5x-2=63

5x=63+2

5x=65⇒x=65:5⇒x=13

Succes!

Răspuns: x = 13

[tex](5x-2):9=7~~~\big|_{\cdot9}[/tex]

[tex](5x-2):9\cdot 9 = 7\cdot9[/tex]

[tex]5x-2 = 63[/tex]

[tex]5x = 63+2[/tex]

[tex]5x = 65[/tex]

[tex]x = 65:5[/tex]

[tex]\boxed{x = 13}[/tex]