Incorrect. Multiply the second equation by 2 to get: $\displaystyle{2}{x}-{10}{y}=-{18}\usepackage{cmbright}\Huge\$

Add this to $\displaystyle-{2}{x}+{7}{y}={6}\usepackage{cmbright}\Huge\$ to eliminate x. Solve for y and substitute this into the second equation. Solve for x. The correct answer is 11.