Question

2.Qual é o valor de "x" em cada caso, respectivamente?

a) 9/x = 27/33

b) x/13 = 45/65

c) 16/19 = x/76

d) 36/42 = 12/x
URGENTEEEEEEEEEE!

Answer 1

Explicação passo-a-passo:

a)

$\sf \dfrac{9}{x}=\dfrac{27}{33}$

$\sf 27x=9\cdot33$

$\sf 27x=297$

$\sf x=\dfrac{297}{27}$

$\sf \red{x=11}$

b)

$\sf \dfrac{x}{13}=\dfrac{45}{65}$

$\sf 65x=13\cdot45$

$\sf 65x=585$

$\sf x=\dfrac{585}{65}$

$\sf \red{x=9}$

c)

$\sf \dfrac{16}{19}=\dfrac{x}{76}$

$\sf 19x=16\cdot76$

$\sf 19x=1216$

$\sf x=\dfrac{1216}{19}$

$\sf \red{x=64}$

d)

$\sf \dfrac{36}{42}=\dfrac{12}{x}$

$\sf 36x=42\cdot12$

$\sf 36x=504$

$\sf x=\dfrac{504}{36}$

$\sf \red{x=14}$