Question

Preencha os espaços vazios de modo que as frações sejam equivalentes a) 4/10= /5 b) 2/6= /9 C) /20=3/4 d) 8/ =400/500 é) 1/2=3/

Answer 1

Explicação passo-a-passo:

.

$\dfrac{4}{10} = \dfrac{x}{5}$

$10x = 20$

$x = \dfrac{20}{1 0 }$

$x = 2$

Então

$\dfrac{4}{10} = \dfrac{2}{5}$

.

$\dfrac{2}{6} = \dfrac{x}{9}$

$6x = 18$

$x = \dfrac{18}{6}$

$x = 3$

Então

$\dfrac{2}{6} = \dfrac{3}{9}$

.

$\dfrac{x}{20} = \dfrac{3}{4}$

$4x = 60$

$x = \dfrac{60}{4}$

$x = 15$

Então

$\dfrac{15}{20} = \dfrac{3}{4}$

.

$\dfrac{8}{x} = \dfrac{400}{500}$

$400x = 4000$

$x = \dfrac{4000}{400}$

$x = 10$

Então

$\dfrac{8}{10} = \dfrac{400}{500}$

.

$\dfrac{1}{2} = \dfrac{3}{x}$

$x = 6$

Então

$\dfrac{1}{2} = \dfrac{3}{6}$