Translate: 'two-thirds of a number xxx minus one-fourth of yyy'.
frac23x−frac14y\\frac{2}{3}x - \\frac{1}{4}yfrac23x−frac14y
frac2x−y7\\frac{2x-y}{7}frac2x−y7
frac23x+frac14y\\frac{2}{3}x + \\frac{1}{4}yfrac23x+frac14y
frac23y−fracx4\\frac{2}{3y}-\\frac{x}{4}frac23y−fracx4