Question

\(\dfrac{3-5x}{-4}\) ≤ 0

Giải hộ mình với ạ. Mình cảm ơn!

Answer 1

\(\dfrac{3-5x}{-4}\le0\)

\(\Leftrightarrow\left(-4\right).\dfrac{3-5x}{-4}\ge0.\left(-4\right)\)

\(\Leftrightarrow3-5x\ge0\)

\(\Leftrightarrow3\ge5x\)

\(\Leftrightarrow5x\le3\Leftrightarrow x\le0,6\)

Answer 2

\(\dfrac{3-5x}{-4}\le0\)
\(\Leftrightarrow3-5x\ge0\) ( Vì -4 <0 )
\(\Leftrightarrow3\ge5x\)
\(\Leftrightarrow5x\le3\)
\(\Leftrightarrow x\le\dfrac{3}{5}\)