Question

Пожалуйста помогите!решить пропорции.​

Answer 1

Ответ:

Пошаговое объяснение:

$\frac{8}{14} =\frac{x}{35} \\14x=280\\x=20\\\\\frac{7}{28} =\frac{x}{12} \\28x=84\\x=3\\\\\frac{4}{x} =\frac{6}{18} \\6x=72\\x=12\\\\\frac{14}{10} =\frac{21}{x} \\14x=210\\x=15\\\\\frac{x}{10}=\frac{18}{60}\\  60x=180\\x=3\\\\\frac{45}{25} =\frac{18}{x} \\45x=450\\x=10$

Answer 2

$\frac{8}{14} = \frac{x}{35} \\ 14x = 35 \times 8 \\ 14x = 280 \\ x = 280 \div 14 \\ x = 20 \\ \frac{8}{14} = \frac{20}{35} \\ \\ \frac{7}{28} = \frac{x}{12} \\ 28x = 12 \times 7 \\ 28x = 84 \\ x = 84 \div 28 \\ x = 3 \\ \frac{7}{28} = \frac{3}{12} \\ \\ \frac{4}{x} = \frac{6}{18} \\ 6x = 4 \times 18 \\ 6x = 72 \\ x = 72 \div 6 \\ x = 12 \\ \frac{4}{12} = \frac{6}{18} \\ \\ \frac{14}{10} = \frac{21}{x} \\ 14x = 21 \times 10 \\ 14x = 210 \\ x = 210 \div 14 \\ x = 15 \\ \frac{14}{10} = \frac{21}{15} \\ \\ \frac{x}{10} = \frac{18}{60} \\ 60x = 18 \times 10 \\ 60x = 180 \\ x = 180 \div 60 \\ x = 3 \\ \frac{3}{10} = \frac{18}{60} \\ \\ \frac{45}{25} = \frac{18}{ x} \\ 45x = 25 \times 18 \\ 45x = 450 \\ x = 450 \div 45 \\ x = 10 \\ \frac{45}{25} = \frac{18}{10}$