Find the error in the calculations below, if there is one:

Line (1): $\displaystyle{8}{x}-{4}={2}{\left({4}{x}+{1}\right)}-{6}\usepackage{cmbright}\Huge\$

Line (2): $\displaystyle{8}{x}-{4}={8}{x}+{1}-{6}\usepackage{cmbright}\Huge\$

Line (3): $\displaystyle{8}{x}-{4}={8}{x}-{5}\usepackage{cmbright}\Huge\$

Line (4): $\displaystyle-{4}=-{5}\usepackage{cmbright}\Huge\$

Line (5): Based on the calculations above, there are no solutions.