54\\x<54:(-9)\\x<-6\\x\in(-\infty;-6)" alt="7x \leq -14\\x \leq -14:7\\x \leq -2\\x\in[-2;+\infty)\\\\-9x>54\\x<54:(-9)\\x<-6\\x\in(-\infty;-6)" align="absmiddle" class="latex-formula">
12:(-3)\\x>-4\\x\in (-4;+\infty)" alt="1,5(x-4)-3,5x12:(-3)\\x>-4\\x\in (-4;+\infty)" align="absmiddle" class="latex-formula">