[tex] \frac{2}{3} = \frac{a}{6} = > 3 \times a = 2 \times 6[/tex]
[tex]3 \times a = 12 \\ a = 12 \div 3 \\ a = 4[/tex]
[tex] \frac{b}{5} = \frac{28}{10} = > 10 \times b = 5 \times 28[/tex]
[tex]10 \times b = 1440 \\ b = 1440 \div 10 \\ b = 144[/tex]
[tex] \frac{4}{c} = \frac{2}{9} = > 2 \times c = 4 \times 9 \\ [/tex]
[tex]2 \times c = 36 \\2 \times c = 36 \\ c = 36 \div 2 \\ c = 18[/tex]
[tex] \frac{12}{5} = \frac{24}{d} = > 12 \times d = 24 \times 5[/tex]
[tex]12 \times d = 120 \\ d = 120 \div 12 \\ d = 10[/tex]
