Question

considerando o teorema de tales resolva as questões abaixo: *Por favor é urgente*

Answer 1

$\frac{6}{x-1}=\frac{2}{x-3}\\\\6.(x-3)=(x-1).2\\\\6x-18=2x-2\\\\6x-2x=-2+18\\\\4x=16\\\\x=\frac{16}{4}\\\\x=4$