Question

1-resolver as seguintes equacoes do 1 grau:

A) 5X-40:2-X ?

Answer 1

5(x-8) / 2-x = 0       5(x-8) = 0*2-x       5(x-8) = 0        5x -40 = 0      5x = 40                          x = 40/5 x=8

Answer 2

$5x-40:2-x$
$5x-x-20=0$
$4x-20=0$
$x=20:4$
$x= \sqrt{5}$
$x=2,23$