Question

Resolva a proporção : x/5 = 21/35 *
5 pontos
A) 3
B) 5
C) 7
D) 12

Answer 1

Resposta :

5 : X = 21 : 35

5X = 0,6

X= 0,6 : 5

X= 0,12

D) 12

Answer 2

Resposta:

$\frac{x}{5} = \frac{21}{35} \\\\35x = 5 . 21\\\\35x = 105\\\\x = \frac{105}{35} \\\\x = 3$

portanto a resposta letra a) 3