Question

очень срочно пожалуйста

Answer 1

$1) \frac{8}{7} = \frac{x}{56} \\ 8 \times 56 = 7x \\ x = \frac{8 \times 56}{7} = 64 \\ 2) \frac{x}{2 \frac{13}{36} } = \frac{ \frac{27}{85} }{ \frac{1}{4} } \\ \frac{x}{ \frac{85}{36} } = \frac{27}{85} \times 4 \\ \frac{x}{ \frac{85}{36} } = \frac{108}{85} \\ 85x = 108 \times \frac{85}{36} \\ 85x = 3 \times 85 \\ x = \frac{3 \times 85}{85} = 3 \\ 3)\frac{a}{0.6} = \frac{17}{1.2} \\ 1.2a = 17 \times 0.6 \\ a = \frac{17 \times 0.6}{1.2} = \frac{17 \times \frac{3}{5} }{ \frac{6}{5} } = 17 \times \frac{3}{5} \times \frac{5}{6} = \frac{17}{2} = 8.5 \\ 4) \frac{7 - y}{6} = \frac{5}{9} \\ (7 - y)9 = 6 \times 5 \\ 63 - 9y = 30 \\ 9y = 33 \\ y = \frac{33}{9} = 3 \frac{6}{9}=3 \frac{2}{3}$