Question

Determinati numarul x stiund ca 7/11=x/99

Answer 1

Explicație pas cu pas:

7/11=x/99

7*99=11x

693=11x

x=693:11

x=63

Answer 2

$\it \dfrac{^{9)}7}{\ 11}=\dfrac{x}{99} \Rightarrow \dfrac{63}{99}=\dfrac{x}{99} \Rightarrow x=63\\ \\ \\ Sau:\\ \\ \dfrac{7}{11}=\dfrac{x}{99} \Rightarrow x=\dfrac{\ \ 7\cdot99^{(11}}{11}=7\cdot9=63$