Question

1,4*x>sau egal 7 va rogggggg

Answer 1

$1,4 = \frac{14}{10} = \frac{7}{5}$
$\frac{7x}{5} \geq 7$
Dupa ce aducem la acelasi numitor :
$7x \geq 35$
$x \geq \frac{35}{7}$
$x \geq 5$
x ∈ $\left[5 ; + \infty)$