Question

Resolva a proporção:

X
----------------- = 2/5
2 . (1/1 + 3/4)

Answer 1

Resposta:

$x=\frac{7}{5}$

Explicação passo-a-passo:

$\frac{x}{2(\frac{1}{1}+\frac{3}{4})}=\frac{2}{5}\\\\\frac{x}{2(\frac{7}{4})}=\frac{2}{5}\\\\\frac{x}{\frac{7}{2}}=\frac{2}{5} \\x*\frac{2}{7}=\frac{2}{5}\\\\\frac{2x}{7}=\frac{2}{5}\\\\10x=14\\x=\frac{14}{10}=\frac{7}{5}$