Question

ce valori ale lui n satisfac inegalitatea: 25<_ 20+n+2<29?

Answer 1

$25 \leq 20+n+2\ \textless \ 29$
$25 \leq 22+n\ \textless \ 29$
$25-22 \leq n\ \textless \ 29-22$
$3 \leq n\ \textless \ 7$

n∈[3, 7)