Question

O TRIplo de um numero .é iqual a sua metade + 10 , qual e esse numero ????"

Answer 1

$3x=\frac{x}{2}+10$
$3x-\frac{x}{2}=10$
$\frac{6x}{2}-\frac{x}{2}=\frac{20}{2}$
$6x-x=20$
$5x=20$
$x=\frac{20}{5}$
$x=4$

Prova Real:
$3x=\frac{x}{2}+10$
$3*4=\frac{4}{2}+10$
$12=2+10$
$12=12$