Question

5 - Encontre o valor de x nas proporções. (0,5 cada)
a)5 = 2
x10
b)3 = x
6 4​

Answer 1

$\frac 5x = \frac{2}{10}\\\frac 5x = \frac{1}{5}\\x = 5 \cdot 5\\\boxed{x = 25}\\\\\frac 36 = \frac x4\\\frac 12 = \frac x4\\2 \cdot x = 4\\x = \frac 42\\\boxed{x = 2}$