Multiply both sides by 4 to clear the fractions: $\displaystyle{3}{y}-{24}={8}+{y}\usepackage{cmbright}\Huge\$

Add 24 to both sides: $\displaystyle{3}{y}={32}+{y}\usepackage{cmbright}\Huge\$

Subtract y from both sides: $\displaystyle{2}{y}={32}\usepackage{cmbright}\Huge\$

Divide both sides by 2: $\displaystyle{y}={16}\usepackage{cmbright}\Huge\$