Question

Qual o resultado dessa inequação 5x-3(x-2)>20-2x sabendo que o resultado é 11/5

Answer 1

$5x-3(x-2)\ \textgreater \ 20-2x\\\\5x-3x+6\ \textgreater \ 20-2x\\\\2x+6\ \textgreater \ 20-2x\\\\4x\ \textgreater \ 14\\\\x\ \textgreater \ \dfrac{14}{4}\\\\x\ \textgreater \ \dfrac{7}{2}\\\\\\S=\begin{Bmatrix}x\in\mathbb{R}:x\ \textgreater \ \dfrac{7}{2}\end{Bmatrix}$