посчитайте Плиз математику.

Question

Гульбахар

6 год назад

ОТВЕТЫ

Bojka

Nov 25, 2020

$x \div 5 = 9 \\ x = 9 \times 5 \\ x = 45$

$\frac{1}{9}\div x =\frac{1}{3}\\\frac{1}{9}\times\frac{1}{x}=\frac{1}{3}\\\frac{1}{9x} =\frac{1}{3}\\ 9x = 3 \\ x =\frac{1}{3}$

$1 \frac{4}{5}\times x = 1 \\ x =1 \div1 \frac{4}{5}=1\div\frac{9}{4}=1 \times \frac{4}{9}=\frac{4}{9}\\ x =\frac{4}{9}$

$1 \frac{4}{5}\times x = 2 \frac{2}{5}\\ x = 2 \frac{2}{5}\div 1 \frac{4}{5}=\frac{12}{5}\times\frac{5}{9}=\frac{4}{3}\\ x =\frac{4}{3}$

283