Question

O valor de x na pdoporcao 2x/x-1 = 4/5 é:

Answer 1

$\frac{2x}{x-1}=\frac{4}{5}\\ \\ 10x=4(x-1)\\ \\ 10x=4x-4\\ \\ 10x-4x=-4\\ \\ 6x=-4\\ \\ x=\frac{-4}{6}\\ \\ x=-\frac{2}{3}$