Question

determine o valor de x

a)
$\frac{1}{x } = \frac{3}{9 }$
b)
$\frac{x}{9} = \frac{3}{1}$
c)
$\frac{x}{2} = \frac{15}{10}$
d)
$\frac{45}{9} = \frac{15}{x}$
e)
$\frac{x}{100} = \frac{216}{600}$
​

Answer 1

Resposta:

a) 1/x = 3/9

3x = 1 ×9

x = 9÷ 3

x=3

x/9 = 3/1

1x = 3×9

x = 27÷ 1

x = 27

c) 9/x = 15/10

10x = 9 ×15

x = 135÷10

x = 13,5

d) 45/9 = 3/x

45x = 3×9

x = 135 ÷ 9

x = 3

e) x/100 = 216/600

600x = 216 × 100

x = 21.600 ÷600

x = 36