Question

x:6,3=2целых 1 седьмая:1,25.КАков x

Answer 1

$frac{x}{6.3} = frac{1 frac{1}{7} }{1.25} \ \ x= frac{6.3*1 frac{1}{7} }{1.25} = frac{6.3* frac{8}{7} }{1.25} = frac{6 frac{3}{10}* frac{8}{7} }{ frac{125}{100} } = frac{ frac{63*8}{10*7} }{ frac{5}{4} } = frac{63*8*4}{10*7*5} = frac{9*4*4}{5*1*5} = \ \ = frac{144}{25} =5.76$