Question

х : 8,4=1 1/8 : 6 3/4

Answer 1

$x:8,4=1 \frac{1}{8} :6 \frac{3}{4} \\ 6 \frac{3}{4}x=8,4*1 \frac{1}{8} \\ \frac{27}{4}x= \frac{84}{10} * \frac{9}{8} \\ \frac{27}{4} x= \frac{189}{20} \\ x= \frac{189}{20} * \frac{4}{27} \\ x= \frac{7}{5} =1 \frac{2}{5}$