Use the distributive property on both sides of the equation to simplify:

$\displaystyle{4}{x}-{2}+{10}={9}+{9}{x}-{5}{x}\usepackage{cmbright}\Huge\$

Add like terms: $\displaystyle{4}{x}+{8}={9}+{4}{x}\usepackage{cmbright}\Huge\$

Subtract $\displaystyle{4}{x}\usepackage{cmbright}\Huge\$ from both sides: $\displaystyle{8}={9}\usepackage{cmbright}\Huge\$

Since this is false, it means that there is no solution.