Question

cómo resolver 7x-3=3x+9​

Answer 1

$7x - 3 = 3x + 9$

$7x = 3x + 9 + 3$

$7x = 3x + 12$

$7x - 3x = 12$

$4x = 12$

$x = \frac{12}{4}$

$x = 3$

Verificamos

$7(3) - 3 = 3(3) + 9$

$21 - 3 = 9 + 9$

$18 = 9 + 9$

$18 = 18$

18 = 18 Verdadero