Question

2x-5 sobre 10 - 1-x sobre 5 = 0
qual a resposta??????

Answer 1

$\frac{2x - 5}{10} - \frac{1 - x}{5} = 0$



$\frac{2x - 5}{10} = \frac{1 - x}{5}$


$5(2x - 5) = 10(1 - x) \\ 10x - 25 = 10 - 10x \\ 20x = 35$
$x = \frac{35}{20} = \frac{7}{4}$