Question

Determine o valor de x:
A) 4/8 = X/10 =
B) 3,5/X = 7/28

Answer 1

Explicação passo-a-passo:

.

$\dfrac{4}{8} = \dfrac{x}{1 0 }$

Multiplique cruzado

$8 \times x = 10 \times 4$

$8x = 40$

$x = \dfrac{40}{8}$

$x = 5$

.

$\dfrac{3.5}{x} = \dfrac{7}{28}$

Multiplique cruzado

$7 \times x = 28 \times 3.5$

$7x = 98$

$x = \dfrac{98}{7}$

$x = 14$