Question

Aflati termenul necunoscut din urmatoarele proportii: a) x/3=5/1 b)0,(3)/x=2/0,(2) c) 1/4/2=3/2/x
Va roggggg

Answer 1

a)

x/3 = 5/1⇒x = 5·3/1=15

c)

$\it \dfrac{\dfrac{1}{4}}{2}=\dfrac{\dfrac{3}{2}}{x}\Longrightarrow x = \dfrac{2\cdot\dfrac{3}{2}}{\dfrac{1}{4}}\Longrightarrow x = \dfrac{3}{\dfrac{1}{4}} =3:\dfrac{1}{4} =\dfrac{3}{1} \cdot\dfrac{4}{1} = 12$