Question

calcule o valor de x na proporçao x/-5/4=2/3/1/2

Answer 1

$\frac{x}{ -\frac{5}{4} } = \frac{ \frac{2}{3} }{ \frac{1}{2} } \\ \\ x.(- \frac{4}{5}) = \frac{2}{3} . \frac{2}{1} \\ \\ \frac{4x}{5} = \frac{4}{3} \\ \\ 4x.3=4.5 \\ \\ 12x=20 \\ \\ x= \frac{20}{12}= \frac{5}{3}$