Question

5(х + 4) < 2(4х- 5).

Answer 1

$5(x+4)\ \textless \ 2(4x-5)\\5x+20\ \textless \ 8x-10\\5x-8x\ \textless \ -10-20\\-3x\ \textless \ -30\\3x\ \textgreater \ 30\\x\ \textgreater \ 10$

x ∈ $(10;+\infty )$