Verified answer

а)

[tex] \frac{2}{9} \times 18 = \frac{2 \times 18}{9} = 4[/tex]

б)

[tex]5 \times \frac{4}{25} = \frac{5 \times 4}{25} = \frac{4}{5} [/tex]

в)

[tex] \frac{5}{17} \times 17 = \frac{5 \times 17}{17} = 5[/tex]

г)

[tex] \frac{7}{23} \times 1 = \frac{7}{23} [/tex]

д)

[tex] \frac{1}{12} \times 24 = \frac{24}{12} = 2[/tex]

е)

[tex] \frac{4}{25} \times 0 = 0[/tex]

ж)

[tex]11 \times \frac{1}{11} = \frac{11}{11} = 1[/tex]

з)

[tex] \frac{7}{8} \times 16 = \frac{7 \times 16}{8} = 14[/tex]