Question

qual a dizima de 1,333

Answer 1

$x=1,333\ldots\\ \\ 10x=13,333\ldots\\ \\ \\ 10x-x=13,\mathbf{333\ldots}-1,\mathbf{333\ldots}$


As partes destacadas em negrito se cancela, e ficamos com

$9x=13-1\\ \\ 9x=12\\ \\ x=\dfrac{12}{9}\\ \\ x=\dfrac{12 \div 3}{9 \div 3}\\ \\ x=\dfrac{4}{3} \Rightarrow \boxed{1,333\ldots = \dfrac{4}{3}}$