Correct. Use the distributive property on both sides: $\displaystyle{5}{z}+{5}={6}-{4}{z}+{17}\usepackage{cmbright}\Huge\$ . Add the 6 and 17, and then subtract 5 from both sides to get $\displaystyle{5}{z}={18}-{4}{z}\usepackage{cmbright}\Huge\$ . Now add $\displaystyle{4}{z}\usepackage{cmbright}\Huge\$ to both sides to get $\displaystyle{9}{z}={18}\usepackage{cmbright}\Huge\$ . Finally, divide both sides by 9 to get $\displaystyle{z}={2}\usepackage{cmbright}\Huge\$ .