Question

Complete as igualdades utilizando regra de três simples:

$\frac{x}{4 } = \frac{6}{8}$
$\frac{5}{2} = \frac{15}{x}$
$\frac{6}{154} = \frac{30}{x}$
$\frac{3}{x} = \frac{1,5}{4}$
$\frac{7,5}{1,5} \: = \frac{x}{6}$

Answer 1

Boa tarde!!

Nesse caso, basta multiplicarmos cruzado e acharemos o valor de x:

8x = 24
x = 24/8
x = 3


5x = 30
x = 30/5
x = 6

6x = 4620
x = 4620 / 6
x = 770

1,5x = 12
x = 12/1,5
x = 8

1,5x = 45
x = 45/1,5
x = 30

Bons estudos!

Answer 2

1) $x = \frac{24}{8} = 3$

2) $x = \frac{30}{5}=6$

3) $x = \frac{4620}{6}=770$

4) $x = \frac{12}{1,5} = 8$

5) $x = \frac{45}{1,5} = 30$