1)9x-4x+28≥-3;
5x≥-31;
x≥-6,2;
2)-18}} \right." alt="\left \{ {{-35+5x<0} \atop {6-3x>-18}} \right." align="absmiddle" class="latex-formula">
-24}} \right." alt="\left \{ {{5x<35} \atop {-3x>-24}} \right." align="absmiddle" class="latex-formula">
x<7;</p>