Question

resolva as seguintes proporções
a) X= 21
5 35


b) 10= 50
7 x​

Answer 1

Resposta:

$a) \frac{x}{5} = \frac{21}{35} \\ 35x = 21 \times 5 \\ 35 x = 105 \\ x = \frac{105}{35} \\ x = 3$

$b) \frac{10}{7} = \frac{50}{x} \\ 10x = 50 \times 7 \\ 10x = 350 \\ x = \frac{350}{10} \\ x = 35$