This is a solution to the second equation, but not to the system. If you substitute these values into the first equation you get $\displaystyle{4}{\left({19}\right)}+{2}{\left({1}\right)}={34}\usepackage{cmbright}\Huge\$ , or $\displaystyle{76}+{2}={34}\usepackage{cmbright}\Huge\$ , which is false. Solve the second equation for x: $\displaystyle{x}={14}+{5}{y}\usepackage{cmbright}\Huge\$ . Then substitute $\displaystyle{14}+{5}{y}\usepackage{cmbright}\Huge\$ for x in the first equation and solve for y. Substitute this value into any equation to find x.