Question

508.решиье уровнение 1)х：9/10＝1
3)х：3＝5/9
5)х：7/13＝1
7)х：10＝1/25
срочено

Answer 1

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Answer 2

Пошаговое объяснение:

$x \div \frac{9}{10} = 1$

$x \times \frac{10}{9} = 1$

$10x = 9$

$x =0.9$

$x \div 3 = 5 \div 9$

$\frac{x}{3} \times 3 = \frac{5}{9} \times 3$

$x = \frac{5}{3}$

$x \div \frac{7}{13} = 1$

$13x = 7$

$x = \frac{7}{13}$

$\frac{x}{10} = \frac{1}{25}$

$x = \frac{10}{25} = \frac{2}{5}$