Question

-1/2 menor o igual a 4-3x/5 menor o igual a 1/4

Answer 1

$- \frac{1}{2} \leq \frac{4-3x}{5} \leq \frac{1}{4}$
$\frac{-5}{2} -4 \leq -3x \leq \frac{5}{4} -4$
$\frac{-21}{2} \leq -3x \leq \frac{-11}{4}$
(-) ≈ $\frac{21}{2} \geq 3x \geq \frac{11}{4}$
$\frac{21}{6} \geq x \geq \frac{11}{12}$
$3.5 \geq x \geq 0.91$