Question

Ce formula se aplica la
l2x-7l mai mic sau egal cu 3

Answer 1

$|2x-7| \leq 3 \\ -3 \leq 2x-7 \leq 3 \\ +4 \leq 2x \leq 10 \\ 2 \leq x \leq 5 \\ =\ \textgreater \ x={ 2..5}$