Question

afla numarul necunoscut (5x-2):9=7​

Answer 1

Salut!:)

(5x-2):9=7

(5x-2)=9×7

5x-2=63

5x=63+2

5x=65⇒x=65:5⇒x=13

Succes!

Answer 2

Răspuns: x = 13

$(5x-2):9=7~~~\big|_{\cdot9}$

$(5x-2):9\cdot 9 = 7\cdot9$

$5x-2 = 63$

$5x = 63+2$

$5x = 65$

$x = 65:5$

$\boxed{x = 13}$