Question

41 + x -39 mai mic decat 83 - 77

Answer 1

41 + x -39 < 83 - 77
x < 83-77-41+39
x < 4

Answer 2

$41+x-39 \ \textless \ 83 - 77 \Rightarrow x+ 41-39 \ \textless \ 6 \Rightarrow x +2 \ \textless \ 6 \Rightarrow x\ \textless \ 6-2 \Rightarrow \\ \\ \Rightarrow x \ \textless \ 4 \Rightarrow \boxed{x \in\big(-\infty, 4\big)}$