tentukan nilai yang belum diketahui supaya setiap pernyataan berikut benar

a.[tex] \frac{6}{24} = \frac{5.25}{21} = \frac{7}{28} [/tex]

b.[tex] \frac{4}{20} = \frac{5}{25} = \frac{6}{30} [/tex]

c.[tex] \frac{6}{27} = \frac{8}{36} = \frac{14}{63} [/tex]

d.[tex] \frac{6}{8} = \frac{15}{20} = \frac{24}{32} [/tex]