Multiply both sides by 2 to clear the fraction: $\displaystyle-{4}{j}-{2}\le{2}{\left({4}{j}+{5}\right)}\usepackage{cmbright}\Huge\$

Use the distributive property to clear the parentheses: $\displaystyle-{4}{j}-{2}\le{8}{j}+{10}\usepackage{cmbright}\Huge\$

Add 2 to both sides: $\displaystyle-{4}{j}\le{8}{j}+{12}\usepackage{cmbright}\Huge\$

Subtract $\displaystyle{8}{j}\usepackage{cmbright}\Huge\$ from both sides: $\displaystyle-{12}{j}\le{12}\usepackage{cmbright}\Huge\$

Divide both sides by $\displaystyle-{12}\usepackage{cmbright}\Huge\$ : $\displaystyle{j}\ge-{1}\usepackage{cmbright}\Huge\$