Question

$10=1.\bigg(1+\dfrac{x}{10}\bigg)$ O valor de x?

Answer 1

$\Large\boxed{\begin{array}{l}\sf 10=1\cdot\bigg(1+\dfrac{x}{10}\bigg)\\\sf 10=1+\dfrac{x}{10}\\\sf 10\cdot10=10\cdot1+\diagdown\!\!\!\!\!\!1\!0\cdot\dfrac{x}{\diagdown\!\!\!\!\!\!1\!0}\\\sf 10+x=100\\\sf x=100-10\\\sf x=90\\\sf S=\{90\}\end{array}}$