a)
[tex] \frac{2}{3} \times 0.3x = \frac{2}{3} \times \frac{3}{10} x = \frac{6}{30} x = \frac{1}{5} x[/tex]
b)
[tex] - 2.7x \div 3 = - \frac{27}{10} x \times \frac{1}{3} = - \frac{27}{30} x = - \frac{9}{10} x[/tex]
c)
[tex]1.1x \div 6 = \frac{11}{10} x \times \frac{1}{6} = \frac{11}{60} x[/tex]
d)
[tex] \frac{y}{3} \times \frac{3}{4} = \frac{3y}{12} = \frac{y}{4} = \frac{1}{4} y[/tex]
